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The Big Bang Theory
Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?
S5, EP5 "The Russian Rocket Reaction"
Wil Wheaton invites Leonard and Sheldon to a party at his house; Howard receives an opportunity.
S5, EP6 "The Rhinitis Revelation"
Sheldon finds himself competing with the gang for his mother's (Laurie Metcalf) attention when she visits.
S10, EP19 "The Collaboration Fluctuation"
Leonard, Penny and Raj settle into their new living arrangement; Sheldon expresses interest in Amy's work.
Rerun Air Date: July 28, 2024
Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?
Rerun Air Date: July 29, 2024
Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?
Rerun Air Date: July 29, 2024
Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?
S6, EP15 "The Spoiler Alert Segmentation"
A fight between Sheldon and Leonard impacts Amy and Penny's living arrangements; while Howard is away, Raj helps Mrs. Wolowitz out.
S11, EP5 "The Collaboration Contamination"
Sheldon and Koothrappali confide in Bernadette when they can't handle Amy and Wolowitz working together; Penny and Leonard learn a secret from an unlikely source about dealing with Sheldon.
S6, EP16 "The Tangible Affection Proof"
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.
S11, EP6 "The Proton Regeneration"
Sheldon auditions for the role of the new Professor Proton; Penny takes care of Halley when Bernadette and Wolowitz need bed rest.
S6, EP17 "The Monster Isolation"
After a bad date, Koothrappali decides to never leave his apartment; Penny's acting skills impress Sheldon.
S11, EP7 "The Geology Methodology"
Sheldon tries to keep his collaboration with Bert a secret; Penny and Bernadette coach Koothrappali on navigating his relationship with Ruchi.
S6, EP18 "The Contractual Obligation Implementation"
Leonard, Sheldon and Wolowitz talk to junior high girls about science-related careers; Raj plans a date with Lucy.
S11, EP8 "The Tesla Recoil"
Leonard and Wolowitz are furious when they learn Sheldon worked with the military behind their backs; Bernadette suspects Ruchi is trying to steal her job.
S10, EP10 "The Property Division Collision"
Sheldon and Leonard disagree about how to divide their shared belongings; Koothrappali and Stuart fight to be the most helpful to Bernadette during her final weeks of pregnancy.
S5, EP20 "The Transporter Malfunction"
When Penny buys Leonard and Sheldon "Star Trek" collectibles, Sheldon finds himself haunted by Mr. Spock; after a blind date, Raj believes he has met his future wife.
S6, EP19 "The Closet Reconfiguration"
Howard considers whether or not he should open a letter from his father; Penny and Leonard host a "grown-up" cocktail party.
S11, EP9 "The Bitcoin Entanglement"
Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable investment; a seven-year-old video reveals a secret about Leonard and Penny's relationship.
S5, EP8 "The Isolation Permutation"
Amy is devastated when Penny and Bernadette shop for wedding dresses without her.
S5, EP9 "The Ornithophobia Diffusion"
Leonard and Penny spend time alone; Sheldon tries to face his fear of birds.
Rerun Air Date: August 5, 2024
Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?
Rerun Air Date: August 5, 2024
Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?
S6, EP21 "The Closure Alternative"
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.
S11, EP10 "The Confidence Erosion"
Sheldon and Amy try to use math to eliminate wedding planning stress; Koothrappali "breaks up" with Wolowitz after realizing he is hurting his confidence.
S6, EP22 "The Proton Resurgence"
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.
S11, EP12 "The Matrimonial Metric"
Sheldon and Amy subject their friends to a series of secret experiments to discover which two would be most qualified to be the best man and the maid of honor at their wedding; Penny reveals her true feelings about Amy.
S6, EP23 "The Love Spell Potential"
Amy and Sheldon's relationship takes a surprising turn during a game of "Dungeons & Dragons"; Lucy and Koothrappali have an awkward date.
S11, EP13 "The Solo Oscillation"
Sheldon kicks Amy out to work solo; Amy and Leonard bond during a series of science experiments; Bert replaces Wolowitz in the band; Sheldon finds Penny a surprising source of scientific inspiration.
S6, EP24 "The Bon Voyage Reaction"
When Leonard receives an exciting opportunity to work overseas, Penny and Sheldon are thrown for a loop.
S11, EP14 "The Separation Triangulation"
Koothrappali learns the woman he's dating has a very upset husband; Sheldon rents his old room for a quiet place to work.
S10, EP16 "The Allowance Evaporation"
Sheldon and Amy have their first fight since moving in together; Koothrappali is shocked at the realities of financial independence when he stops receiving support from his father.
S6, EP1 "The Date Night Variable"
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.
S7, EP1 "The Hofstadter Insufficiency"
Sheldon and Penny share secrets while Leonard is away; Wolowitz helps Raj get over his ex.
S11, EP15 "The Novelization Correlation"
Sheldon petitions Wil Wheaton to appear on the new "Professor Proton" show, but Wil offers a role to Amy instead; Penny gets angry when she thinks the female protagonist in Leonard's novel is based on her.
S10, EP23 "The Gyroscopic Collapse"
After celebrating the completion of the top-secret Air Force project, Leonard, Sheldon and Wolowitz get an unwelcome surprise; Amy receives an offer for a summer position as a visiting researcher.
S11, EP4 "The Explosion Implosion"
Wolowitz and Sheldon bond over having disappointing fathers; Leonard is disturbed when his mother finds a new best friend in Penny.
S11, EP3 "The Relaxation Integration"
As Sheldon stresses about picking a wedding date, Amy tries to convince him he has a more laid-back side; Koothrappali and Stuart compete to win the heart of Bernadette's new co-worker.
S11, EP2 "The Retraction Reaction"
Leonard's job is at stake after he gives an embarrassing radio interview; Amy and Bernadette bond over having to hide their success from Sheldon and Howard.
S11, EP1 "The Proposal Proposal"
Amy answers Sheldon's marriage proposal; Howard and Bernadette struggle with unexpected news.
S10, EP24 "The Long Distance Dissonance"
The gang is concerned when Sheldon's former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.
S10, EP22 "The Cognition Regeneration"
Leonard is less than thrilled when Penny considers accepting a job offer from Zack, her ex-boyfriend.
S10, EP21 "The Separation Agitation"
Howard and Bernadette struggle to leave Halley in day care; Bert introduces the gang to his new girlfriend, Rebecca.
S10, EP20 "The Recollection Dissipation"
Sheldon pushes himself to the limit when he collaborates on projects with Leonard and Wolowitz as well as Amy on the same day; Bernadette nears the end of her maternity leave and must return to work.
S10, EP5 "The Hot Tub Contamination"
Things do not run smoothly when Amy moves in with Sheldon, and Leonard and Penny have to intervene; Howard and Bernadette find unexpected guests at their house when they decide to cancel their vacation plans.
S6, EP14 "The Cooper/Kripke Inversion"
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.
S6, EP13 "The Bakersfield Expedition"
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.
S6, EP12 "The Egg Salad Equivalency"
When Sheldon is accused of sexual harassment, he ends up getting Raj, Leonard and Wolowitz in trouble.
S6, EP11 "The Santa Simulation"
During a game, Sheldon revisits Christmas memories; Amy, Penny and Bernadette look for a date for Koothrappali.
S6, EP10 "The Fish Guts Displacement"
When Amy gets sick, Sheldon tries to nurse her back to health; Wolowitz and his father-in-law plan a fishing trip.
S5, EP15 "The Friendship Contraction"
Leonard starts to reconsider his friendship with Sheldon; Wolowitz tries to choose his astronaut nickname.
