A woman who moves into an apartment across the hall from two brilliant but socially awkward physicists shows them how little they know about life outside of the laboratory.
TV Show Information
Year of Release: 2007 Country: us Last Updated: Thursday 13 June, 2019 Minutes per Episode: 25 Genre: comedy Rating: 8,2/10 Season(s): 12 Network: CBS TV Show Status: ended Likes: 52379
Episode: 1 - Pilot
Released: 25 September 2007 Description: Brilliant physicist roommates Leonard and Sheldon meet their new neighbor Penny, who begins showing them that as much as they know about science, they know little about actual living.
Episode: 10 - The Loobenfeld Decay
Released: 25 March 2008 Description: Leonard and Sheldon each lie to avoid seeing Penny's concert, but Sheldon's is a bit too complicated for his own good.
Episode: 11 - The Pancake Batter Anomaly
Released: 01 April 2008 Description: With his friends knowing how sour he acts when sick—and avoiding him as a result—Sheldon is nursed by Penny, who hasn't a clue what she's in for.
Episode: 12 - The Jerusalem Duality
Released: 15 April 2008 Description: With Sheldon rattled over meeting Dennis, a 15-year-old physicist who's smarter than he, Leonard helps him look for a way to debunk Dennis's research.
Episode: 13 - The Bat Jar Conjecture
Released: 22 April 2008 Description: Sheldon finds himself booted from the gang's Physics Bowl team and replaced with Leslie, so he forms his own team, hoping to prove he's superior.
Episode: 14 - The Nerdvana Annihilation
Released: 29 April 2008 Description: When delivery of another collectible leads to Penny's lashing out at Leonard, he decides it's time to give up his habit, much to his friends' protestation.
Episode: 15 - The Pork Chop Indeterminacy
Released: 06 May 2008 Description: The rest of the gang fall for Sheldon's twin sister, and Leonard's plan to win her heart is derailed when Sheldon declares he'll be the one to decide who can date her.
Episode: 16 - The Peanut Reaction
Released: 13 May 2008 Description: Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.
Episode: 17 - The Tangerine Factor
Released: 20 May 2008 Description: Penny's break-up spurs Leonard to summon the courage to ask her out, and each goes to Sheldon for advice on their upcoming date.
Episode: 2 - The Big Bran Hypothesis
Released: 02 October 2007 Description: Leonard volunteers to sign for a package in an attempt to make a good impression on Penny, but when he enlists Sheldon for help, his attempt at chivalry goes terribly awry.
Episode: 3 - The Fuzzy Boots Corollary
Released: 09 October 2007 Description: Leonard asks a woman out after he finds out that Penny is seeing someone.
Episode: 4 - The Luminous Fish Effect
Released: 16 October 2007 Description: Sheldon's getting fired forces him to explore what life has to offer outside physics, leaving Leonard to take drastic action to snap his friend out of his funk.
Episode: 5 - The Hamburger Postulate
Released: 23 October 2007 Description: Fearing he's wasting his time on Penny, Leonard ends up making a connection with Leslie.
Episode: 6 - The Middle Earth Paradigm
Released: 30 October 2007 Description: Penny hosts a Hallowe'en party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.
Episode: 7 - The Dumpling Paradox
Released: 06 November 2007 Description: With Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team
Episode: 8 - The Grasshopper Experiment
Released: 13 November 2007 Description: Raj's parents set him up on a blind date, but just when he discovers he can talk to her, she shows interest in Sheldon.
Episode: 9 - The Cooper-Hofstadter Polarization
Released: 18 March 2008 Description: When they're invited to present at a physics conference, Sheldon's reluctance to share the credit leads to a tiff between him and Leonard, and Penny's intervention only exacerbates the situation.
Episode: 1 - The Bad Fish Paradigm
Released: 23 September 2008 Description: Penny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.
Episode: 10 - The Vartabedian Conundrum
Released: 09 December 2008 Description: Leonard asks Penny for advice when his new relationship starts moving too fast.
Episode: 11 - The Bath Item Gift Hypothesis
Released: 16 December 2008 Description: Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.
Episode: 12 - The Killer Robot Instability
Released: 13 January 2009 Description: Penny's criticism of Wolowitz's romantic life pushes him into depression and AWOL for a fighting robot battle the rest of guys are depending on him for.
Episode: 13 - The Friendship Algorithm
Released: 20 January 2009 Description: Sheldon creates a scientific procedure for making friends.
Episode: 14 - The Financial Permeability
Released: 03 February 2009 Description: Sheldon's solution to Penny's financial difficulty leads to a confrontation between Leonard and Penny's ex-boyfriend.
Episode: 15 - The Maternal Capacitance
Released: 10 February 2009 Description: Leonard and Penny are drawn together after a disastrous visit from Leonard's mother.
Episode: 16 - The Cushion Saturation
Released: 03 March 2009 Description: A paintball game leads to a fight between Sheldon and Penny, and romance for Leslie and Wolowitz.
Episode: 17 - The Terminator Decoupling
Released: 10 March 2009 Description: Leonard, Sheldon and Wolowitz are ecstatic to learn that a famous science-fiction actress (Summer Glau) is on board the train they are taking to San Francisco.
Episode: 18 - The Work Song Nanocluster
Released: 17 March 2009 Description: Penny's home business turns into a complete nightmare when Sheldon takes over.
Episode: 19 - The Dead Hooker Juxtaposition
Released: 31 March 2009 Description: Penny squares off with a new beautiful female neighbor who may become the building's "new Penny."
Episode: 2 - The Codpiece Topology
Released: 30 September 2008 Description: A jealous Leonard reacts to Penny's new guy by rebounding with Leslie.
Episode: 20 - The Hofstadter Isotope
Released: 14 April 2009 Description: A fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.
Episode: 21 - The Vegas Renormalization
Released: 28 April 2009 Description: Leonard and Koothrappali escort a heartbroken Wolowitz to Las Vegas, and Sheldon becomes locked out of his apartment and must stay with Penny.
Episode: 22 - The Classified Materials Turbulence
Released: 05 May 2009 Description: Penny's second date with Stuart sees her making a comment that gives Leonard new hope for a relationship with her. Wolowitz realizes there's a crucial error in a NASA project he's working on.
Episode: 23 - The Monopolar Expedition
Released: 12 May 2009 Description: The guys' plan to work over the summer at the North Pole makes Penny revaluate her feelings for Leonard.
Episode: 3 - The Barbarian Sublimation
Released: 07 October 2008 Description: Sheldon creates a monster when he introduces Penny to online gaming.
Episode: 4 - The Griffin Equivalency
Released: 14 October 2008 Description: Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.
Episode: 5 - The Euclid Alternative
Released: 21 October 2008 Description: Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.
Episode: 6 - The Cooper-Nowitzki Theorem
Released: 04 November 2008 Description: Sheldon and the gang are confused when a young grad student is attracted to him.
Episode: 7 - The Panty Piñata Polarization
Released: 11 November 2008 Description: When Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.
Episode: 8 - The Lizard-Spock Expansion
Released: 18 November 2008 Description: Leonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.
Episode: 9 - The White Asparagus Triangulation
Released: 25 November 2008 Description: Sheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.
Episode: 1 - The Electric Can Opener Fluctuation
Released: 22 September 2009 Description: When Sheldon learns the guys tampered with his expedition data he got from the arctic, he leaves to Texas in disgrace. This results in the guys following him, which threatens Leonard's hope for some romantic time with Penny and the guys' friendship with Sheldon.
Episode: 10 - The Gorilla Experiment
Released: 08 December 2009 Description: Penny gets help from Sheldon in order to understand what Leonard's work is, while Wolowitz develops a jealousy when Leonard starts hanging out with his new girlfriend.
Episode: 11 - The Maternal Congruence
Released: 15 December 2009 Description: A Christmas visit from his mother has Leonard discovering she's kept a lot of news from him that she shares with Sheldon and worrying if she'll approve of his romance with Penny.
Episode: 13 - The Bozeman Reaction
Released: 19 January 2010 Description: When their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.
Episode: 14 - The Einstein Approximation
Released: 02 February 2010 Description: Sheldon's search for the answer to a physics problem leads him to work at the Cheesecake Factory with Penny.
Episode: 15 - The Large Hadron Collision
Released: 09 February 2010 Description: Leonard can only bring one guest on a trip to see CERN's Large Hadron Collider (the world's largest and highest energy particle accelerator) in Switzerland on Valentine's Day.
Episode: 16 - The Excelsior Acquisition
Released: 02 March 2010 Description: Sheldon winds up in traffic court when he gets a ticket because of Penny.
Episode: 17 - The Precious Fragmentation
Released: 09 March 2010 Description: When the guys find a ring from "The Lord of the Rings" at a garage sale, it threatens to tear them apart.
Episode: 18 - The Pants Alternative
Released: 23 March 2010 Description: Sheldon's friends come to his aid when his fear of public speaking stands between him and a coveted award.
Episode: 19 - The Wheaton Recurrence
Released: 13 April 2010 Description: A fight between Leonard and Penny threatens their relationship, while Sheldon battles Wil Wheaton in bowling.
Episode: 2 - The Jiminy Conjecture
Released: 29 September 2009 Description: Leonard and Penny struggle to recover from an awkward first hookup while Sheldon and Howard stake their best comic books on a bet to determine the species of a cricket.
Episode: 20 - The Spaghetti Catalyst
Released: 04 May 2010 Description: When Leonard and Penny aren't speaking, Sheldon goes to extremes to keep them both happy.
Episode: 21 - The Plimpton Stimulation
Released: 11 May 2010 Description: Leonard and Sheldon compete for the attention of a famous female physicist.
Episode: 22 - The Staircase Implementation
Released: 18 May 2010 Description: Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.
Episode: 23 - The Lunar Excitation
Released: 25 May 2010 Description: While Penny worries that dating Leonard has ruined her for normal guys, Wolowitz and Koothrappali search for Sheldon's perfect match online.
Episode: 3 - The Gothowitz Deviation
Released: 06 October 2009 Description: Howard and Raj visit a Goth nightclub to pick up women while Sheldon attempts to build a better Penny using chocolate-based behavior modification.
Episode: 4 - The Pirate Solution
Released: 13 October 2009 Description: Raj must find a new job or be sent back to India, but Sheldon has a solution, which leaves Leonard and Penny dealing with Howard as a third wheel.
Episode: 5 - The Creepy Candy Coating Corollary
Released: 20 October 2009 Description: After overhearing that Wil Wheaton is entering a trading-card competition, Sheldon decides to enter it himself. Meanwhile, Penny sets up one of her friends on a date with Wolowitz.
Episode: 6 - The Cornhusker Vortex
Released: 03 November 2009 Description: Sheldon becomes Leonard's teacher in order to understand football, while an incident with flying a kite threatens Howard and Raj's friendship.
Episode: 7 - The Guitarist Amplification
Released: 10 November 2009 Description: A squabble between Leonard and Penny sees Sheldon playing mediator, though out of his own incovenience from the sitiation rather than altruism.
Episode: 8 - The Adhesive Duck Deficiency
Released: 17 November 2009 Description: With Leonard, Howard and Raj away camping in the desert, an injured Penny has only Sheldon to rely on.
Episode: 9 - The Vengeance Formulation
Released: 24 November 2009 Description: After he's humiliated on National Public Radio, Sheldon vows to destroy Kripke, while Wolowitz tries not to destroy his new relationship with Bernadette.
Episode: 1 - The Robotic Manipulation
Released: 24 September 2010 Description: Penny tags along on Sheldon's first ever date; Wolowitz finds a new use for a robotic arm.
Episode: 10 - The Alien Parasite Hypothesis
Released: 10 December 2010 Description: Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.
Episode: 11 - The Justice League Recombination
Released: 17 December 2010 Description: The guys find a "super" use for Penny's new boyfriend, Zack, when they enter a costume contest as the Justice League.
Episode: 12 - The Bus Pants Utilization
Released: 07 January 2011 Description: Leonard's idea for a smartphone app derails his friendship with Sheldon.
Episode: 13 - The Love Car Displacement
Released: 21 January 2011 Description: Bernadette runs into her ex-boyfriend while attending a science event with Wolowitz.
Episode: 14 - The Thespian Catalyst
Released: 04 February 2011 Description: Hoping it will make him a better teacher, Sheldon has Penny give him acting lessons. Raj has fantasies about a friend's girlfriend.
Episode: 15 - The Benefactor Factor
Released: 11 February 2011 Description: A wealthy donor to the university makes Leonard consider how far he's willing to go for the sake of science.
Episode: 16 - The Cohabitation Formulation
Released: 18 February 2011 Description: As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with Raj's sister.
Episode: 17 - The Toast Derivation
Released: 25 February 2011 Description: Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.
Episode: 18 - The Prestidigitation Approximation
Released: 11 March 2011 Description: Sheldon is baffled by Wolowitz's magic trick. Meanwhile, Leonard realizes dating Priya may make it impossible to continue being friends with Penny.
Episode: 19 - The Zarnecki Incursion
Released: 01 April 2011 Description: Sheldon's World of Warcraft online game account is hacked and he is determined to find out who did it. Also Penny shares some girl talk with her friends about Leonard and his new girlfriend. When Howard discovers who hacked the account, the guys depart for a quest to Carlsbad, California where the hacker, Todd Zarnecki, lives in order to retrieve the stolen account, along with "enchanted weapons, gladiator armor, gold, and a battle ostrich, Glenn". Despite Sheldon carrying his Bat'leth with him they fail miserably. On the way back their car engine breaks down, and they're saved by Penny, who came to drive them home and upon hearing about their failure promises to show them "How we finish quests in Nebraska" and forces Zarnecki to give up kicking him below waist.
Episode: 2 - The Cruciferous Vegetable Amplification
Released: 01 October 2010 Description: Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.
Episode: 20 - The Herb Garden Germination
Released: 08 April 2011 Description: Sheldon and Amy decide to start several rumors about the others as a test. Meanwhile, Howard takes his relationship with Bernadette to even higher level.
Episode: 21 - The Agreement Dissection
Released: 29 April 2011 Description: When Leonard spends too much time in the shower with Priya, Sheldon charges Leonard with two violations of the roommate agreement. However, before he can get too far, Priya uses her skills as a lawyer to nullify the charges due to the agreement's vague wording, much to Sheldon's dismay. When the guys take advantage of Priya's skills in order to eat Greek food on pizza night, Sheldon goes to Penny, who invites him to a girls' night out with Amy and Bernadette, which Sheldon agrees to after Penny mentions that they may be talking trash about Priya. After the girls drink some cocktails, they decide to take Sheldon dancing, which Sheldon reluctantly goes along with. After dancing, Sheldon takes an intoxicated Amy back to her apartment and as well as talking about Priya, meets a monkey who is addicted to smoking cigarettes. Amy tells Sheldon not to give in to Priya's law skills, before kissing him and going to her bathroom to vomit.
Episode: 22 - The Wildebeest Implementation
Released: 06 May 2011 Description: Raj attempts to cure his social anxiety disorder while Penny uses Bernadette to spy on Leonard and his girlfriend.
Episode: 23 - The Engagement Reaction
Released: 13 May 2011 Description: When Howard finally breaks the news to his mom that he's engaged to Bernadette, it lands her in the hospital.
Episode: 24 - The Roommate Transmogrification
Released: 20 May 2011 Description: When Bernadette receives her PhD, Wolowitz feels emasculated. Raj and Leonard swap places and Penny does something she's regrets.
Episode: 3 - The Zazzy Substitution
Released: 08 October 2010 Description: The guys are concerned as Sheldon searches for an alternative to human companionship.
Episode: 4 - The Hot Troll Deviation
Released: 15 October 2010 Description: An embarrassing secret of Wolowitz's comes to light, while Sheldon and Raj have a small war at work.
Episode: 5 - The Desperation Emanation
Released: 22 October 2010 Description: Leonard realizes he’s the only one without a girlfriend, while Sheldon wants to get rid of his.
Episode: 6 - The Irish Pub Formulation
Released: 29 October 2010 Description: Leonard keeps an affair a secret from Sheldon, Howard and Raj.
Episode: 7 - The Apology Insufficiency
Released: 05 November 2010 Description: Sheldon's answers during an FBI interview put Wolowitz's security clearance in jeopardy.
Episode: 8 - The 21-Second Excitation
Released: 12 November 2010 Description: While the guys camp in line for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.
Episode: 9 - The Boyfriend Complexity
Released: 19 November 2010 Description: Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope.
Episode: 1 - The Skank Reflex Analysis
Released: 23 September 2011 Description: Penny is worried with how damaged her friendship with the guys will be in the aftermath of her sleeping with Raj while Sheldon becomes the leader of the paintball team.
Episode: 10 - The Flaming Spittoon Acquisition
Released: 18 November 2011 Description: Sheldon considers taking his relationship with Amy to the next level when Stuart from the comic book store asks her out on a date.
Episode: 11 - The Speckerman Recurrence
Released: 09 December 2011 Description: Leonard must face his fears after being contacted by his high school tormentor.
Episode: 12 - The Shiny Trinket Maneuver
Released: 13 January 2012 Description: Sheldon gets in trouble with Amy when he isn't impressed by her recent accomplishment, and Howard must come to grips with Bernadette's dislike of children.
Episode: 13 - The Recombination Hypothesis
Released: 20 January 2012 Description: Leonard, who broke up with Priya, asks Penny out to a spur-of the-moment romantic dinner for two, and the duo contemplates on their relationship.
Episode: 14 - The Beta Test Initiation
Released: 27 January 2012 Description: Leonard and Penny deal with the idea of starting a relationship again and Raj finally finds a "woman" he can talk to without being drunk, in the form of Siri on his new phone. Meanwhile, Sheldon decides to start a YouTube series entitled "Sheldon Cooper presents Fun with Flags" with the help of Amy.
Episode: 15 - The Friendship Contraction
Released: 03 February 2012 Description: Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Wolowitz tries to pick his astronaut nickname.
Episode: 16 - The Vacation Solution
Released: 10 February 2012 Description: When Sheldon is forced to take his vacation, he goes to work with Amy in her neurobiology lab.
Episode: 17 - The Rothman Disintegration
Released: 17 February 2012 Description: Penny is horrified when Amy gives her a gift: a huge, quite horrible painting of the two of them. With no good way to avoid displaying it, she only hangs it up when Amy is over. When Amy catches her taking the painting down, she's embarrassed and angry until Penny lies and says the gift made Bernadette jealous.
When the deranged Professor Rothman is forced to retire, both Sheldon and Kripke vie for his office. President Siebert refuses to resolve the dispute, so Leonard arranges a one-on-one basketball game to decide (since they're both equally bad at sports). Neither one can even make a single basket, so they end up deciding by seeing who can bounce the ball the highest. Sheldon wins; unfortunately, the office is not what he'd hoped for: the thermostat is located in the office of a professor going through the hot flashes of menopause (thus Sheldon is too cold), the mockingbird outside his window is off-key with the annoying windchimes, the perpetually naked Professor Rothman refuses to vacate, and the Geology Department upstairs makes too much noise. Finally, Sheldon gets his head stuck in the wall in an existing hole, after which Leonard takes his picture before he goes for help.
Episode: 18 - The Werewolf Transformation
Released: 24 February 2012 Description: Sheldon becomes agitated when his regular barber is out sick. Astronaut training causes Howard to reconsider wanting to go into space. Penny beats Leonard in chess, the first time she plays.
Episode: 19 - The Weekend Vortex
Released: 09 March 2012 Description: Sheldon must choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.
Episode: 2 - The Infestation Hypothesis
Released: 23 September 2011 Description: A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.
Episode: 20 - The Transporter Malfunction
Released: 30 March 2012 Description: Penny buys Leonard and Sheldon “Star Trek” collectibles as a thank-you, leading Sheldon to be haunted by Mr. Spock. Meanwhile, Raj decides he has met the “Future Mrs. Koothrappali” after his parents set him up on a date.
Episode: 21 - The Hawking Excitation
Released: 06 April 2012 Description: When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.
Episode: 22 - The Stag Convergence
Released: 27 April 2012 Description: After the guys throw Howard a bachelor party, Bernadette reconsiders marrying him after learning about his sexual history.
Episode: 23 - The Launch Acceleration
Released: 04 May 2012 Description: When NASA moves up Howard's mission, he must face his fears and Bernadette's dad, thus putting the wedding plans in jeopardy. Meanwhile, Leonard says something surprising to Penny in the bedroom.
Episode: 24 - The Countdown Reflection
Released: 11 May 2012 Description: The fifth season ends with Howard and Bernadette deciding to get married before his NASA mission, causing the gang to scurry into overdrive in an effort to stage the wedding. NASA astronaut Mike Massimino has a cameo as himself.
Episode: 3 - The Pulled Groin Extrapolation
Released: 30 September 2011 Description: Leonard and Amy get to know each other better, while Howard and Bernadette spend the weekend with Mrs. Wolowitz.
Episode: 4 - The Wiggly Finger Catalyst
Released: 07 October 2011 Description: Penny plays Matchmaker for Raj, which results in him finding a girl he is comfortable talking to.
Episode: 5 - The Russian Rocket Reaction
Released: 14 October 2011 Description: Sheldon and Leonard get invited to a party at Wil Wheaton's house, and Howard gets an out-of-this-world opportunity.
Episode: 6 - The Rhinitis Revelation
Released: 21 October 2011 Description: Sheldon's mother, Mary Cooper, comes to visit, but Sheldon is annoyed that she also spends time with the rest of the gang, instead of catering to his every demand.
Episode: 7 - The Good Guy Fluctuation
Released: 28 October 2011 Description: A cute comic book artist puts Leonard and Priya’s relationship to the test, while Sheldon tries to scare the guys for Halloween.
Episode: 8 - The Isolation Permutation
Released: 04 November 2011 Description: Amy becomes heartbroken when she discovers that Penny and Bernadette went wedding dress shopping without her.
Episode: 9 - The Ornithophobia Diffusion
Released: 11 November 2011 Description: Leonard and Penny try hanging out as friends on a 'non-date', but end up purposely ruining each others chances with perspective dates. Meanwhile, Sheldon enlists the help of Bernadette and Amy to overcome his fear of birds.
Episode: 1 - The Date Night Variable
Released: 28 September 2012 Description: Raj faces his loneliness when his friends are out on dates; while in space, Wolowitz gets drawn into a fight between Bernadette and his mom.
Episode: 10 - The Fish Guts Displacement
Released: 07 December 2012 Description: When Amy gets sick, Sheldon tries to nurse her back to health; Wolowitz and his father-in-law plan a fishing trip.
Episode: 11 - The Santa Simulation
Released: 14 December 2012 Description: During a game, Sheldon revisits Christmas memories; Amy, Penny and Bernadette look for a date for Koothrappali.
Episode: 12 - The Egg Salad Equivalency
Released: 04 January 2013 Description: When Sheldon is accused of sexual harassment, he ends up getting Raj, Leonard and Wolowitz in trouble.
Episode: 13 - The Bakersfield Expedition
Released: 11 January 2013 Description: As the guys don costumes and go on a road trip to a comic book convention, the ladies decide to stay home and try to interpret a comic book.
Episode: 14 - The Cooper/Kripke Inversion
Released: 01 February 2013 Description: Sheldon faces a crisis of confidence when he is forced to work with his nemesis, Barry Kripke; Raj and Howard buy expensive action figures of themselves.
Episode: 15 - The Spoiler Alert Segmentation
Released: 08 February 2013 Description: A fight between Sheldon and Leonard impacts Amy and Penny's living arrangements; while Howard is away, Raj helps Mrs. Wolowitz out.
Episode: 16 - The Tangible Affection Proof
Released: 15 February 2013 Description: The guys search for a perfect Valentine's Day gift for their significant others; Stuart and Raj host a "lonely people" party at the comic book store.
Episode: 17 - The Monster Isolation
Released: 22 February 2013 Description: After a bad date, Koothrappali decides to never leave his apartment; Penny's acting skills impress Sheldon.
Episode: 18 - The Contractual Obligation Implementation
Released: 08 March 2013 Description: Leonard, Sheldon and Wolowitz talk to junior high girls about science-related careers; Raj plans a date with Lucy.
Episode: 19 - The Closet Reconfiguration
Released: 15 March 2013 Description: Howard considers whether or not he should open a letter from his father; Penny and Leonard host a "grown-up" cocktail party.
Episode: 2 - The Decoupling Fluctuation
Released: 05 October 2012 Description: Sheldon tries to intervene when he learns that Penny is thinking about breaking up with Leonard; Howard is picked on.
Episode: 20 - The Tenure Turbulence
Released: 05 April 2013 Description: The girls get involved when Leonard, Sheldon and Raj compete for tenure at the University.
Episode: 21 - The Closure Alternative
Released: 26 April 2013 Description: Amy tries to help Sheldon get over his compulsive need for closure when one of his favorite TV shows is canceled; Raj discovers a secret about Lucy.
Episode: 22 - The Proton Resurgence
Released: 03 May 2013 Description: Leonard and Sheldon hire the host (Bob Newhart) of their favorite childhood TV show to perform; Bernadette and Howard run into trouble while dog-sitting for Raj's pet.
Episode: 23 - The Love Spell Potential
Released: 10 May 2013 Description: Amy and Sheldon's relationship takes a surprising turn during a game of "Dungeons & Dragons"; Lucy and Koothrappali have an awkward date.
Episode: 24 - The Bon Voyage Reaction
Released: 17 May 2013 Description: When Leonard is considered for an exciting research opportunity, Sheldon becomes jealous and tries to scare him into backing out. Meanwhile, Raj's relationship with Lucy is strained when he tries to get her to meet his friends.
Episode: 3 - The Higgs Boson Observation
Released: 12 October 2012 Description: Amy feels threatened by Sheldon's new assistant; Wolowitz starts to feel the pressures of being in space.
Episode: 4 - The Re-Entry Minimization
Released: 19 October 2012 Description: Wolowitz's return from space isn't all he expected; game night becomes a gender war.
Episode: 5 - The Holographic Excitation
Released: 26 October 2012 Description: The gang heads to Stuart's comic book store to celebrate Halloween; Leonard uses science to seduce Penny.
Episode: 6 - The Extract Obliteration
Released: 02 November 2012 Description: A game threatens Sheldon's relationship with Stephen Hawking; Penny secretly signs up for a college class.
Episode: 7 - The Habitation Configuration
Released: 09 November 2012 Description: Bernadette wants Wolowitz to move out of his mom's house; Sheldon is caught in the middle of Amy and Wil Wheaton's argument.
Episode: 8 - The 43 Peculiarity
Released: 16 November 2012 Description: Raj and Howard try to to figure out why Sheldon disappears at 2:45 every afternoon; jealousy arises in Penny and Leonard's relationship.
Episode: 9 - The Parking Spot Escalation
Released: 30 November 2012 Description: Sheldon and Wolowitz's fight over a parking spot at the university impacts the whole gang.
Episode: 1 - The Hofstadter Insufficiency
Released: 27 September 2013 Description: In the first part of the one-hour seventh season premiere, Sheldon and Penny bond in Leonard's absence, but it's Sheldon's feelings that are crushed when Leonard returns from the North Sea. Guest star Regina King returns as Mrs. Davis, the University's Director of Employee Relations.
Episode: 10 - The Discovery Dissipation
Released: 06 December 2013 Description: Sheldon faces a crisis after Leonard disproves his accidental scientific discovery. Meanwhile, Raj must stay with Howard & Bernadette for a week.
Episode: 11 - The Cooper Extraction
Released: 13 December 2013 Description: While Sheldon is in Texas, the rest of the gang realize how much he has changed their lives as they decorate the apartment Christmas tree.
Episode: 12 - The Hesitation Ramification
Released: 03 January 2014 Description: As Leonard tries to help Penny with a disappointment, Penny asks him a bold question about their relationship; Sheldon wants to learn how to be funny.
Episode: 13 - The Occupation Recalibration
Released: 10 January 2014 Description: Sheldon must learn how to relax when he is forced to take a vacation; Leonard tries to support Penny when she quits her job; Bernadette needs to replace one of Stuart's comic books.
Episode: 14 - The Convention Conundrum
Released: 31 January 2014 Description: Unable to get Comic-Con tickets, Sheldon tries to hold his own convention and ends up spending a wild evening with James Earl Jones; the ladies try to act maturely.
Episode: 15 - The Locomotive Manipulation
Released: 07 February 2014 Description: Sheldon and Amy go on a trip to wine country with Howard and Bernadette; Penny and Leonard rush Raj's dog to the vet
Episode: 16 - The Table Polarization
Released: 28 February 2014 Description: When Leonard buys a dining room table, Sheldon re-evaluates the changes in his life; Bernadette is torn when Wolowitz gets the chance to go back to space.
Episode: 17 - The Friendship Turbulence
Released: 07 March 2014 Description: Bernadette tries to negotiate peace between Sheldon and Wolowitz; Penny receives an embarrassing offer; Raj wants Amy to write to a woman on his behalf.
Episode: 18 - The Mommy Observation
Released: 14 March 2014 Description: Sheldon is faced with a new reality when he visits his mom in Houston; a murder mystery party starts arguments.
Episode: 19 - The Indecision Amalgamation
Released: 04 April 2014 Description: Raj struggles with guilt when he dates two women at once; Penny has a chance to play a part in a cheesy movie; Sheldon is torn between two gaming systems.
Episode: 2 - The Deception Verification
Released: 27 September 2013 Description: On the second part of the one-hour seventh season premiere, Raj gets consoled about his ex-girlfriend and Howard's relationship with his mother causes an unusual threat to his masculinity. Kevin Sussman returns as Stuart, the comic book store owner.
Episode: 20 - The Relationship Diremption
Released: 11 April 2014 Description: Sheldon has a personal crisis when he decides string theory is a waste of his time; a double date ends in embarrassment for Howard.
Episode: 21 - The Anything Can Happen Recurrence
Released: 25 April 2014 Description: Sheldon gives spontaneity a try, which causes unexpected friction for Penny, Bernadette and Amy; Raj asks Howard for help with preparation for a date with Emily.
Episode: 22 - The Proton Transmogrification
Released: 02 May 2014 Description: Professor Proton helps Sheldon deal with grief; Leonard gets into a competition with Penny; Bernadette and Amy prepare a "Star Wars Day" gift for the guys.
Episode: 23 - The Gorilla Dissolution
Released: 09 May 2014 Description: A bad day compels Penny to re-evaluate her choices -- including Leonard; Bernadette and Howard must care for Mrs. Wolowitz; Sheldon gives Raj advice on relationships.
Episode: 24 - The Status Quo Combustion
Released: 16 May 2014 Description: Faced with an uncertain future, Sheldon considers a major change; Emily and Raj decide to take things to the next level.
Episode: 3 - The Scavenger Vortex
Released: 04 October 2013 Description: When the entire gang competes in a cutthroat scavenger hunt designed by Raj that tests their science knowledge and street smarts, it brings out the best – and worst – in everyone.
Episode: 4 - The Raiders Minimization
Released: 11 October 2013 Description: After Amy ruins one of Sheldon's favorite movies – Raiders of the Lost Ark – he gets defensive, seeking revenge. Meanwhile, Leonard discovers a way to get Penny to do anything; and Raj and Stuart create online dating profiles.
Episode: 5 - The Workplace Proximity
Released: 18 October 2013 Description: Sheldon must decide how much "Amy time" is too much after she takes a job at his university, and their relationship is put to the test. Meanwhile, Howard finds himself sleeping on Raj's couch after a fight with Bernadette.
Episode: 6 - The Romance Resonance
Released: 25 October 2013 Description: Sheldon's latest scientific breakthrough makes him feel like a fraud – and threatens to haunt him forever. Meanwhile, Howard's romantic gesture to Bernadette causes Penny to step up her game with Leonard.
Episode: 7 - The Proton Displacement
Released: 08 November 2013 Description: Sheldon feels slighted when Professor Proton (recurring guest star Bob Newhart) seeks advice from Leonard instead of him, and he seeks revenge by befriending a rival science TV host, Bill Nye (guest starring as himself). Meanwhile, Raj gets jealous when Howard crashes "girls' night."
Episode: 8 - The Itchy Brain Simulation
Released: 15 November 2013 Description: Leonard tries to keep Sheldon from overreacting when a past mistake comes to light, but Sheldon punishes Leonard by making him "walk a mile in his shoes." Meanwhile, Penny confronts Raj's ex-girlfriend, Lucy (guest star Kate Micucci).
Episode: 9 - The Thanksgiving Decoupling
Released: 22 November 2013 Description: An upset Sheldon protests when the entire gang drags him to Mrs. Wolowitz's house for Thanksgiving. Meanwhile, Penny and Leonard must deal with a mistake from her past.
Episode: 1 - The Locomotion Interruption
Released: 23 September 2014 Description: Leonard and Amy make an unexpected trip to Arizona to fetch Sheldon; Penny interviews for a job at Bernadette's company; Stuart's relationship with Mrs. Wolowitz disturbs Howard.
Episode: 10 - The Champagne Reflection
Released: 21 November 2014 Description: While Sheldon says a tearful goodbye to the final instalment of "Fun with Flags", Leonard, Howard and Raj search for something significant in a dead professor's research. And Bernadette is shocked to learn of her co-workers’ true feelings from Penny.
Episode: 11 - The Clean Room Infiltration
Released: 12 December 2014 Description: Leonard and Howard turn to Raj for help in dealing with a work emergency when they nearly come to blows after blaming each other for a potential disaster at the university. Amy throws an authentic Victorian Christmas party, while Sheldon seeks revenge on her for making him celebrate the holidays.
Episode: 12 - The Space Probe Disintegration
Released: 19 December 2014 Description: Wolowitz tries to distract Raj, who is anxiously awaiting data from a space probe he helped launch. Meanwhile, Sheldon and Leonard go dress shopping with Penny and Amy.
Episode: 13 - The Anxiety Optimization
Released: 30 January 2015 Description: The gang tries to help Sheldon when he becomes stuck in a rut at work by increasing his anxiety level. Howard teases Raj with a new game called "Cinnamon or Emily?"
Episode: 14 - The Troll Manifestation
Released: 06 February 2015 Description: Leonard and Sheldon publish a paper which is widely accepted except for comments from an internet troll. Meanwhile, the girls reminisce about embarassing incidents from their past.
Episode: 15 - The Comic Book Store Regeneration
Released: 20 February 2015 Description: Wolowitz receives some shocking news as everyone prepares for the reopening of Stuart’s comic book store. Penny teaches Sheldon how to “let it go,” but can’t follow her own advice after she learns something infuriating about Amy. Also, Leonard and Raj think they spot Nathan Fillion at a restaurant.
Episode: 16 - The Intimacy Acceleration
Released: 27 February 2015 Description: As a joke, Sheldon and Penny try an experiment designed to make participants fall in love. Also, Leonard, Amy, Raj and Emily spend the evening trying to escape a room with a “zombie.” And, after returning from Mrs. Wolowitz’ funeral, Bernadette and Howard run into trouble at the airport.
Episode: 17 - The Colonization Application
Released: 06 March 2015 Description: Trouble arises when Amy learns Sheldon has applied for a one-way mission to colonize Mars. Also, a trip to the pet store ends in a fight for Sheldon and Amy, Leonard surprises Penny with a very “adult” purchase, and Raj is caught snooping in Emily’s apartment.
Episode: 18 - The Leftover Thermalization
Released: 13 March 2015 Description: Friction ensues when a magazine fails to mention Leonard in an article about the paper he co-wrote with Sheldon. Also, a blackout at Mrs. Wolowitz’s home leads to a final family dinner in her honor.
Episode: 19 - The Skywalker Incursion
Released: 03 April 2015 Description: When Leonard and Sheldon are invited to speak at UC Berkeley, they take a detour to try to meet an idol. Also, when Bernadette and Howard battle over the fate of his Doctor Who TARDIS, Raj and Amy offer to settle the dispute with a game of ping pong.
Episode: 2 - The Junior Professor Solution
Released: 23 September 2014 Description: When Sheldon must teach a class, Howard decides to take it; Amy takes advantage of the tension between Penny and Bernadette.
Episode: 20 - The Fortification Implementation
Released: 10 April 2015 Description: When Sheldon and Amy build a blanket fort, they come to major crossroads in their relationship. Also, Wolowitz meets the half-brother he never knew he had, and when Penny is invited to appear on Wil Wheaton’s podcast, she and Leonard have a huge, on-air argument.
Episode: 21 - The Communication Deterioration
Released: 17 April 2015 Description: When Raj is asked to create a message in case a NASA mission discovers alien life, the guys fight over what he should do. Also, Penny is torn between auditioning for a movie or keeping her successful pharmaceutical sales job.
Episode: 22 - The Graduation Transmission
Released: 24 April 2015 Description: Wolowitz questions his engineering abilities when he and Sheldon can’t get a toy drone to fly. Meanwhile, a cancelled flight nearly prevents Leonard from giving the commencement address at his former high school, and Raj pits his parents against each other when his father cuts him off financially.
Episode: 23 - The Maternal Combustion
Released: 01 May 2015 Description: Personalities collide when Sheldon and Leonard’s mothers finally meet. Meanwhile, Howard finally decides to “man up” and do his fair share of the housework – but not without a little help from his friends.
Episode: 24 - The Commitment Determination
Released: 08 May 2015 Description: Sheldon pushes Leonard and Penny to choose a date for their wedding and deals with dramatic changes in his own relationship with Amy.
Episode: 3 - The First Pitch Insufficiency
Released: 30 September 2014 Description: Wolowitz feels nervous when he is asked to throw the first pitch at a Los Angeles Angels game; Penny and Leonard want to prove Sheldon wrong after he says he and Amy are the better couple.
Episode: 4 - The Hook-Up Reverberation
Released: 07 October 2014 Description: Raj's honesty comes back to haunt him when his new girlfriend is unfriendly to Penny; the guys think about becoming part owners in Stuart's store.
Episode: 5 - The Focus Attenuation
Released: 14 October 2014 Description: During their weekend in Las Vegas, Bernadette and Amy accuse Penny of being a buzz kill; the guys try to invent the next big thing.
Episode: 6 - The Expedition Approximation
Released: 21 October 2014 Description: Sheldon and Raj test whether they could survive a dark-matter research expedition in a salt mine by simulating the conditions in a steam tunnel deep underground. Leonard and Penny seek advice from Howard and Bernadette after they fight about money.
Episode: 7 - The Misinterpretation Agitation
Released: 31 October 2014 Description: The guys try to help Penny out of an awkward work dilemma, when a smitten doctor shows up at her door after her flirtatious sales techniques work a little too well. Meanwhile, Amy and Bernadette argue over whether or not female scientists should play up their sexuality.
Episode: 8 - The Prom Equivalency
Released: 07 November 2014 Description: When the gang recreates a high-school prom night on the roof of the guys'; apartment building, Sheldon feels pressure to participate in all the typical romantic traditions.
Episode: 9 - The Septum Deviation
Released: 14 November 2014 Description: When Leonard gets minor surgery on his nose, Sheldon is the one in need of sympathy. Meanwhile, Raj's parents' impending divorce causes Howard and Bernadette to work on their own marriage.
Episode: 1 - The Matrimonial Momentum
Released: 22 September 2015 Description: Sheldon is confronted by a mystery of the universe he cannot unravel: when a woman wants time apart to think, exactly how much time does that mean, and is there any way to hurry the process along? In Las Vegas, Penny and Leonard march closer to marching down the aisle, but has Penny gotten over Leonard’s infidelity? And if so, will he do anything to un-get her over it?
Episode: 10 - The Earworm Reverberation
Released: 11 December 2015 Description: Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave over for dinner despite their previously awkward date, and Wolowitz and Koothrappali become obsessed with a fan of their band, "Footprints on the Moon".
Episode: 11 - The Opening Night Excitation
Released: 18 December 2015 Description: As the guys prepare to go to the premiere of the new Star Wars movie, Sheldon plans a special event for Amy's birthday.
Episode: 12 - The Sales Call Sublimation
Released: 08 January 2016 Description: Leonard visits a psychiatrist so Penny can make a sales call. Stuart moves out of the Wolowitz house. Sheldon works with Raj looking for extra-solar planets.
Episode: 13 - The Empathy Optimization
Released: 15 January 2016 Description: The gang decides to head to Vegas for the week on a party bus. Sheldon learns about the importance of empathy and saying sorry.
Episode: 14 - The Meemaw Materialization
Released: 05 February 2016 Description: Sheldon is thrilled when his Meemaw comes to visit, but his excitement quickly fades when she butts heads with Amy. Also, Raj meets a new girl at the comic book store who makes him question his relationship with Emily.
Episode: 15 - The Valentino Submergence
Released: 12 February 2016 Description: Sheldon and Amy host a live Valentine's Day episode of Fun with Flags, Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub and Raj is torn between Emily and the cute girl he met at the Comic Bookstore.
Episode: 16 - The Positive Negative Reaction
Released: 19 February 2016 Description: When the gang finds out about Bernadette's pregnancy, they celebrate by singing karaoke. Also, Bernadette is concerned when Wolowitz freaks out over her pregnancy announcement, and Wolowitz is convinced he must make more money to provide for a baby.
Episode: 17 - The Celebration Experimentation
Released: 26 February 2016 Description: After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.
Episode: 18 - The Application Deterioration
Released: 11 March 2016 Description: Sheldon works up a contract to split their portion of their guidance system invention royalties, but Bernadette does not like how it's done. Raj must again decide between Emily and Claire when they both contact him.
Episode: 19 - The Solder Excursion Diversion
Released: 01 April 2016 Description: Amy is shocked at a revelation from Sheldon after she buys him a new laptop. Koothrappali sells out Leonard and Wolowitz after they lie to their wives in order to attend an early screening of a movie.
Episode: 2 - The Separation Oscillation
Released: 29 September 2015 Description: Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny’s mind at ease. Also, Sheldon films a special episode of “Fun with Flags” after his breakup with Amy, and Bernadette feels guilty about withholding a secret from Penny.
Episode: 20 - The Big Bear Precipitation
Released: 08 April 2016 Description: Secrets are revealed when Amy and Sheldon join Penny and Leonard on a weekend cabin trip. Raj is more excited about Howard's and Bernadette's impending parenthood than they are.
Episode: 21 - The Viewing Party Combustion
Released: 22 April 2016 Description: Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together.
Episode: 22 - The Fermentation Bifurcation
Released: 29 April 2016 Description: Sheldon and Bernadette spend a night together while the rest of the gang goes to a wine tasting party, but things get uncomfortable for Raj when Zack also attends and takes an interest in Claire.
Episode: 23 - The Line Substitution Solution
Released: 06 May 2016 Description: Sheldon hires Stuart to spend the day with Amy when he’d rather go to a movie screening. Also, Leonard’s mother, Beverly, comes to town and Penny struggles to make a connection with her.
Episode: 24 - The Convergence Convergence
Released: 13 May 2016 Description: Leonard and Penny get remarried in front of their friends (who show up), Leonard's parents, Beverly and Alfred (Judd Hirsch) and Sheldon's mother, Mary, who finds something in common with Alfred. Howard gets an unknown email from the Air Force about his invention.
Episode: 3 - The Bachelor Party Corrosion
Released: 06 October 2015 Description: The guys’ science skills are put to the test when they get a flat tire during Leonard’s bachelor party weekend in Mexico. Also, the girls force Penny to finally tell her family that she eloped with Leonard.
Episode: 4 - The 2003 Approximation
Released: 13 October 2015 Description: Leonard and Penny finally move in together leaving Sheldon very upset with this big change in his life and wishing he could go back to a time when he had no emotions in 2003 before he met Leonard. Raj, Howard and Stuart attempt to form a band.
Episode: 5 - The Perspiration Implementation
Released: 20 October 2015 Description: The guys take a fencing lesson from Barry Kripke and Sheldon finds himself in an awkward position when Kripke expresses interest in Amy. Also, when Stuart struggles to get female customers at the Comic Book Store, Penny, Amy and Bernadette come by to help him out.
Episode: 6 - The Helium Insufficiency
Released: 27 October 2015 Description: In the midst of a nation-wide helium shortage, Sheldon and Leonard take desperate measures to get the supplies they need. Also, Penny and Bernadette download a dating app on Amy's phone to try and find her a new man.
Episode: 7 - The Spock Resonance
Released: 06 November 2015 Description: Adam Nimoy, friend of Wil Wheaton and son of Leonard Nimoy, interviews Sheldon for a Star Trek documentary. Sheldon gets off topic and ends up revealing an engagement ring and his plan to propose to Amy. Bernadette wants to start renovating the house and the issue of starting a family with Howard is brought up.
Episode: 8 - The Mystery Date Observation
Released: 13 November 2015 Description: Amy has a formal date which Leonard, Penny and Bernadette secretly spy on. Sheldon has Howard and Raj help him find a new girlfriend since they found Amy for him.
Episode: 9 - The Platonic Permutation
Released: 20 November 2015 Description: It’s Thanksgiving. Sheldon and Amy go on a lunch date to the aquarium as friends. Howard, Bernadette, Raj and Emily help out at a soup kitchen. Leonard and Penny make their first Thanksgiving dinner as a married couple.
Episode: 1 - The Conjugal Conjecture
Released: 20 September 2016 Description: After Leonard's father, Alfred and Sheldon's mother, Mary share an evening together, everyone deals with an awkward morning the following day. Also, Penny's family arrives for the ceremony, including her anxiety-ridden mother, Susan, and her drug dealing brother, Randall.
Episode: 10 - The Property Division Collision
Released: 02 December 2016 Description: Sheldon and Leonard must divide up their possessions and remove Penny's things from 4B.
Episode: 11 - The Birthday Synchronicity
Released: 16 December 2016 Description: Amy's desire to have an intimate night with Sheldon on her birthday is interrupted by Bernadette going into labor.
Episode: 12 - The Holiday Summation
Released: 06 January 2017 Description: Sheldon and Amy visit Leonard and Penny for the first time since the holidays and share details about their terrible trip to Texas.
Episode: 13 - The Romance Recalibration
Released: 20 January 2017 Description: When Penny feels that Leonard is taking her for granted, she decides to go on a spa weekend with Amy. Also, Wolowitz and Koothrappali try to fix a squeaky floorboard in the baby's room.
Episode: 14 - The Emotion Detection Automation
Released: 03 February 2017 Description: Sheldon beta-tests an MIT invention after hearing it can help him read people's emotions. Also, Leonard can't hide his feelings when Penny announces her brother is coming to town, and Raj invites his ex-girlfriends over to give him dating advice.
Episode: 15 - The Locomotion Reverberation
Released: 10 February 2017 Description: Leonard and Wolowitz try to distract Sheldon when he slows the progress of their guidance system. Also, Penny and Amy take Bernadette out for the night, leaving Raj and Stuart to care for baby Halley.
Episode: 16 - The Allowance Evaporation
Released: 17 February 2017 Description: Sheldon and Amy have their first fight since moving in together and Koothrappali is shocked at the realities of financial independence when he stops receiving support from his father.
Episode: 17 - The Comic-Con Conundrum
Released: 24 February 2017 Description: The guys' annual trip to Comic Con is in doubt when Raj can't afford to go.
Episode: 18 - The Escape Hatch Identification
Released: 10 March 2017 Description: Raj searches for a cheaper living arrangement.
Episode: 19 - The Collaboration Fluctuation
Released: 31 March 2017 Description: Leonard, Penny and Raj adjust to their new living arrangement and Sheldon takes an interest in Amy's work.
Episode: 2 - The Military Miniaturization
Released: 27 September 2016 Description: The Air Force shows interest in the guidance system and Penny lets it slip at work that Bernadette is expecting.
Episode: 20 - The Recollection Dissipation
Released: 07 April 2017 Description: Sheldon pushes himself to the limit when he collaborates on projects with Leonard and Wolowitz as well as Amy on the same day. Also, Bernadette is nearing the end of her maternity leave and must return to work.
Episode: 21 - The Separation Agitation
Released: 14 April 2017 Description: Howard and Bernadette have a hard time leaving Halley in day care when Bernadette returns to work. Also, Bert introduces the gang to his new girlfriend, Rebecca.
Episode: 22 - The Cognition Regeneration
Released: 28 April 2017 Description: Leonard isn’t thrilled when Penny considers taking a new job offered by her ex-boyfriend, Zack.
Episode: 23 - The Gyroscopic Collapse
Released: 05 May 2017 Description: Amy is offered a Fellowship at Princeton, Raj makes new living arrangements, and the gyroscope project is spinning out of control!
Episode: 24 - The Long Distance Dissonance
Released: 12 May 2017 Description: The gang is concerned when Sheldon’s former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.
Episode: 3 - The Dependence Transcendence
Released: 04 October 2016 Description: Sheldon can't keep up with the late nights Howard and Leonard are putting in, Raj spends the day with a pregnant Bernadette and Penny and Amy attend a faculty party.
Episode: 4 - The Cohabitation Experimentation
Released: 11 October 2016 Description: When Amy's apartment floods, she proposes a "cohabitation experiment" with Sheldon. Also, Howard and Bernadette are upset when Koothrappali learns the gender of the baby before they do.
Episode: 5 - The Hot Tub Contamination
Released: 18 October 2016 Description: Leonard and Penny must separate a quarreling Sheldon and Amy when their cohabitation does not go as planned, and Sheldon threatens to break off their relationship when Amy refuses to adhere to the bathroom schedule. Also, Howard and Bernadette find unexpected guests at their house when they decide to stay home from a planned vacation.
Episode: 6 - The Fetal Kick Catalyst
Released: 28 October 2016 Description: Penny is surprised to learn she has fans of her performance in "Serial Ape-ist" when she attends Van Nuys Comic Con with Leonard. Also, Amy hosts a Sheldon-style brunch at Penny’s apartment, and Wolowitz makes an impulsive purchase when he starts stressing out about the baby on the way.
Episode: 7 - The Veracity Elasticity
Released: 04 November 2016 Description: In order to continue living with Sheldon, Amy lies to him about repairs being made to her apartment and they host an "on location" episode of "Fun With Flags" in Penny’s apartment. Also, Leonard lets Penny decorate Sheldon’s old room after he learns that she has been secretly moving Leonard’s collectibles into storage.
Episode: 8 - The Brain Bowl Incubation
Released: 11 November 2016 Description: After a successful experiment combining their genes, Sheldon will stop at nothing to convince Amy they should procreate. Also, Koothrappali is embarrassed to tell the gang what the new woman he’s dating does for a living.
Episode: 9 - The Geology Elevation
Released: 18 November 2016 Description: When Bert, a Caltech geologist, wins the MacArthur Genius fellowship, Sheldon is overcome with jealousy. Also, Wolowitz finds an old remote control Stephen Hawking action figure he invented.
Episode: 1 - The Proposal Proposal
Released: 26 September 2017 Description: Amy enthusiastically accepts Sheldon's marriage proposal. However, when dining with Amy's colleagues later that night, Sheldon is offended that they are more impressed with Amy's work than his own. With help from Stephen Hawking, Sheldon later comes to grips with the fact that he will not always be the center of attention in the marriage. Bernadette is shocked to realize that she is pregnant again. She and Howard are not thrilled at the idea of having another baby so soon after their first. They attempt to convince Leonard and Penny to have a child as well, but are rebuffed.
Episode: 10 - The Confidence Erosion
Released: 08 December 2017 Description: Sheldon and Amy try to eliminate stress from wedding planning by applying math to the process. Koothrappali “breaks up” with Wolowitz after realizing his best friend is actually hurting his confidence.
Episode: 11 - The Celebration Reverberation
Released: 15 December 2017 Description: Sheldon and Wolowitz plan birthday celebrations for Amy and Halley, respectively. Also, Leonard receives a Christmas letter from his brother that causes him to spiral out about his own lack of accomplishments.
Episode: 12 - The Matrimonial Metric
Released: 05 January 2018 Description: To discover who would be most qualified to be best man and maid of honor at their wedding, Sheldon and Amy subject their friends to a series of secret experiments. Also, Penny reveals her true feelings about Amy.
Episode: 13 - The Solo Oscillation
Released: 12 January 2018 Description: When Sheldon kicks Amy out to work solo, she and Leonard bond during a series of science experiments. Also, Bert the geologist replaces Wolowitz in the band Footprints on the Moon, and Sheldon finds Penny a surprising source of scientific inspiration.
Episode: 14 - The Separation Triangulation
Released: 19 January 2018 Description: Koothrappali finds himself in the middle of domestic drama when he learns the woman he's dating, Nell, has a very upset husband, Oliver. Also, when Sheldon rents his old room back for a quiet place to work, he drives Leonard crazy by being a model tenant.
Episode: 15 - The Novelization Correlation
Released: 02 February 2018 Description: When Sheldon petitions Wil Wheaton to appear on the new Professor Proton show, Wil offers a role to Amy instead. Also, Penny gets angry when she thinks the female protagonist in Leonard's novel is based on her.
Episode: 16 - The Neonatal Nomenclature
Released: 02 March 2018 Description: When Bernadette won't go into labor, all her friends try different tactics to get things started. Also, Wolowitz confronts Bernadette after Amy accidentally reveals she's already chosen their son's name.
Episode: 17 - The Athenaeum Allocation
Released: 09 March 2018 Description: Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy. Also, Bernadette and Wolowitz have a hard time deciding who should stay at home with the kids and who should go back to work.
Episode: 18 - The Gates Excitation
Released: 30 March 2018 Description: Penny gets the opportunity to host Bill Gates at work when his company wants to partner with her pharmaceutical company. Also, Leonard, Koothrappali and Wolowitz do everything in their power to meet him, while Sheldon thinks he is the victim of an April Fools prank.
Episode: 19 - The Tenant Disassociation
Released: 06 April 2018 Description: When Leonard learns Sheldon is the president of the tenants association, he decides to run against him. Also, Bernadette encourages Wolowitz and Koothrappali to find the owner of a drone after they find it in the backyard.
Episode: 2 - The Retraction Reaction
Released: 03 October 2017 Description: Leonard angers the university - and the entire physics community - after he gives an embarrassing interview. Also, Amy and Bernadette bond over having to hide their success from Sheldon and Howard.
Episode: 20 - The Reclusive Potential
Released: 13 April 2018 Description: Sheldon takes the guys to a cabin in the middle of nowhere to meet a reclusive scientist; Penny and Bernadette improvise Amy's bachelorette party.
Episode: 21 - The Comet Polarization
Released: 20 April 2018 Description: Sheldon’s comic book store experiences changes when writer Neil Gaiman puts Stuart’s store on the map. Also, Koothrappali takes credit for Penny’s astronomical discovery, and friendships are threatened.
Episode: 22 - The Monetary Insufficiency
Released: 27 April 2018 Description: Sheldon goes to Vegas to win money for science. Also, Penny and Bernadette take Amy wedding dress shopping, but her terrible choice entangles them in a web of lies.
Episode: 23 - The Sibling Realignment
Released: 04 May 2018 Description: When Sheldon learns that his mother won’t attend his wedding unless he invites his brother, Georgie, he and Leonard travel to Texas to end a family feud. Also, the Wolowitz kids inadvertently infects Amy, Bernadette, Wolowitz and Koothrappali with pinkeye.
Episode: 24 - The Bow Tie Asymmetry
Released: 11 May 2018 Description: When Amy’s parents and Sheldon’s family arrive for the wedding, everybody is focused on making sure all goes according to plan – everyone except the bride and groom.
Episode: 3 - The Relaxation Integration
Released: 10 October 2017 Description: As Sheldon stresses about picking a wedding date, Amy tries to convince him he has a more laid-back side. Also, Koothrappali and Stuart compete to win the heart of Bernadette's new coworker, Ruchi.
Episode: 4 - The Explosion Implosion
Released: 17 October 2017 Description: Wolowitz and Sheldon bond when they drive to the desert to shoot off a model rocket. Also, when Leonard's mom, Beverly, finds a new best friend in Penny, it rubs Leonard the wrong way.
Episode: 5 - The Collaboration Contamination
Released: 24 October 2017 Description: Sheldon and Koothrappali confide in Bernadette when they can't handle Amy and Wolowitz working together. Also, Penny and Leonard learn new tactics for how to deal Sheldon from an unlikely source.
Episode: 6 - The Proton Regeneration
Released: 03 November 2017 Description: Sheldon goes head-to-head with Wil Wheaton for the role of the new Professor Proton. Also, Penny steps in to take care of Halley when Bernadette and Wolowitz both wind up on bed rest.
Episode: 7 - The Geology Methodology
Released: 10 November 2017 Description: Sheldon and Bert collaborate on a research project, despite Sheldon's embarrassment. Also, Penny and Bernadette coach Koothrappali on how to navigate his relationship with Ruchi.
Episode: 8 - The Tesla Recoil
Released: 17 November 2017 Description: Leonard and Wolowitz are furious after they learn Sheldon went to work with the military behind their backs. Also, while Bernadette is on bed rest, she asks Raj to do some digging when she suspects Ruchi is trying to steal her job.
Episode: 9 - The Bitcoin Entanglement
Released: 01 December 2017 Description: Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable Bitcoin investment. Also, a seven-year-old video reveals a secret about Leonard and Penny's relationship.
Episode: 1 - The Conjugal Configuration
Released: 25 September 2018 Description: Sheldon and Amy’s honeymoon runs aground in New York, while Penny and Leonard discover they are uncomfortably similar to Amy’s parents, Mr. and Mrs. Fowler. Also, Koothrappali insults physicist Neil deGrasse Tyson and starts a Twitter war.
Episode: 10 - The VCR Illumination
Released: 07 December 2018 Description: Sheldon and Amy are still down about their theory being disproven, but a VHS tape from Sheldon’s past inspires him not to give up. Also, Bernadette turns into a pageant mom when she tries to help Wolowitz ace his Magic Castle audition.
Episode: 11 - The Paintball Scattering
Released: 04 January 2019 Description: Penny and Leonard organize a paintball game that results in mayhem when Sheldon is jealous of Amy. Also, Koothrappali catches Anu with her ex-boyfriend, and Stuart doesn’t want to move in with Denise.
Episode: 12 - The Propagation Proposition
Released: 11 January 2019 Description: Penny's ex-boyfriend, Zack, and his wife want a baby, but when Zack is infertile, they ask Leonard for help. Also, Koothrappali attempts to mend things with his ex-fiancée, Anu.
Episode: 13 - The Confirmation Polarization
Released: 18 January 2019 Description: Sheldon and Amy's super asymmetry theory is proven by two physicists, Dr. Pemberton and Dr. Campbell from Chicago, who then try to kick Amy off the Nobel nomination. Also, Bernadette has a big success at work and Penny's going to be a part of it—whether she wants to be or not.
Episode: 14 - The Meteorite Manifestation
Released: 01 February 2019 Description: Sheldon is thrilled to help Bernadette and Wolowitz navigate bureaucratic paperwork, until he discovers they are breaking the law. Also, Leonard is disappointed when his friends exclude him from a scientific project.
Episode: 15 - The Donation Oscillation
Released: 08 February 2019 Description: Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack, and his wife, Marissa. Also, Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip.
Episode: 16 - The D & D Vortex
Released: 22 February 2019 Description: The gang finds out Wil Wheaton hosts a celebrity Dungeons and Dragons game involving William Shatner, Joe Manganiello, Kareem Abdul-Jabbar and Kevin Smith. Deception and betrayal are the path to make it to the one open seat.
Episode: 17 - The Conference Valuation
Released: 08 March 2019 Description: When Penny and Bernadette go to San Diego for a pharmaceutical sales convention, Wolowitz is in charge of the kids. Also, Sheldon finds a book on experimenting on kids, and the guys plus Amy make a day of it.
Episode: 18 - The Laureate Accumulation
Released: 05 April 2019 Description: When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to bring Nobel laureates Kip Thorne, George Smoot and Frances Arnold to their side. Also, Halley’s fear of the dark leads to opportunity and conflict for Howard, Bernadette and Stuart.
Episode: 19 - The Inspiration Deprivation
Released: 19 April 2019 Description: The concept of what it would mean for women everywhere if Amy were to win a Nobel Prize causes Amy to have a meltdown. Also, Koothrappali and Wolowitz try to relive the good old days after Wolowitz buys a scooter that looks like the one he had years ago.
Episode: 2 - The Wedding Gift Wormhole
Released: 28 September 2018 Description: Sheldon and Amy drive themselves crazy trying to figure out what “perfect gift” Leonard and Penny gave them for their wedding. Also, Koothrappali decides he wants to settle down and asks his father to arrange a marriage for him.
Episode: 20 - The Decision Reverberation
Released: 26 April 2019 Description: Koothrappali is worried people won't take him seriously in his own field after publishing a paper that suggests he may have discovered alien life. Also, Leonard wants to be the principal investigator on a plasma physics study.
Episode: 21 - The Plagiarism Schism
Released: 03 May 2019 Description: Kripke has proof that Dr. Pemberton plagiarized his thesis in college, and Sheldon and Amy aren't sure if they should turn him in or not. Also, Wolowitz is happily surprised to learn that Bernadette wasn't the only waitress at the Cheesecake Factory who had a crush on him back in the day.
Episode: 22 - The Maternal Conclusion
Released: 10 May 2019 Description: Leonard is pleasantly surprised when Beverly comes to visit and she's genuinely kind to him, until he finds out the real reason she's there. Also, Denise and Stuart overstay their welcome at the Wolowitz house.
Episode: 23 - The Change Constant
Released: 17 May 2019 Description: Sheldon and Amy await big news.
Episode: 24 - The Stockholm Syndrome
Released: 17 May 2019 Description: Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret; Sheldon and Amy stick together; and Koothrappali makes a new friend, as the gang travels together into an uncharted future.
Episode: 3 - The Procreation Calculation
Released: 05 October 2018 Description: The Wolowitzes’ life gets complicated when Stuart starts bringing his new girlfriend home. Also, Penny and Leonard talk about starting a family while Koothrappali explores an arranged marriage.
Episode: 4 - The Tam Turbulence
Released: 12 October 2018 Description: When Sheldon won’t tell anyone why he’s never mentioned Tam, his childhood best friend, Leonard takes matters into his own hands. Also, Bernadette and Penny take out Raj’s fiancée, Anu, for dinner to get the skinny on her.
Episode: 5 - The Planetarium Collision
Released: 19 October 2018 Description: When Amy doesn’t have time to work on super-asymmetry, Sheldon goes to great lengths to ensure she’s available to work with him even it if means accidentally sabotaging her career in the process. Also, Koothrappali doesn’t want Wolowitz to join him in hosting a show at the planetarium.
Episode: 6 - The Imitation Perturbation
Released: 26 October 2018 Description: When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny’s Halloween party. Also, Leonard is shocked that Penny doesn’t remember their first kiss.
Episode: 7 - The Grant Allocation Derivation
Released: 02 November 2018 Description: Leonard is caught between a rock and a hard place when he’s responsible for distributing extra grant money. Also, Bernadette turns the backyard playhouse into a hideaway from her husband and kids.
Episode: 8 - The Consummation Deviation
Released: 09 November 2018 Description: Sheldon tries to bond with Amy’s father, but when Wolowitz lures Mr. Fowler away with magic tricks, Sheldon has no choice but to bond with Mrs. Fowler. Also, Koothrappali and Anu try to get physical for the first time.
Episode: 9 - The Citation Negation
Released: 16 November 2018 Description: Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been discovered and disproven. Also, ultra-competitive Bernadette asks Stuart’s girlfriend, Denise, to teach her how to beat Howard in a popular videogame.