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The Big Bang Theory
The Big Bang Theory

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?
12 seasonsComedy, SitcomTV-PG
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Season 1224 of 24 Episodes

  • Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret; Sheldon and Amy stick together; Koothrappali makes a new friend; the gang travels together into an uncharted future.

  • Sheldon and Amy await big news.

  • 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; Denise and Stuart overstay their welcome at the Wolowitz house.

  • 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; Wolowitz learns that Bernadette wasn't the only waitress at the Cheesecake Factory who had a crush on him.

  • 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; Leonard wants to be the principal investigator on a plasma physics study.

  • The weight of winning a Nobel Prize weighs heavy on Amy's shoulders; Koothrappali and Wolowitz try to relive the good old days after Wolowitz buys a scooter that looks like the one he had years ago.

  • When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to win over Nobel laureates Kip Thorne, George Smoot and Frances Arnold; Halley's fear of the dark leads to opportunity and conflict.

  • When Penny and Bernadette go to San Diego for a pharmaceutical sales convention, Wolowitz is left in charge of the kids; Sheldon finds a book about experimenting on kids.

  • The gang uses deception and betrayal to make it to the one open seat at Wil Wheaton's celebrity Dungeons and Dragons game with William Shatner, Joe Manganiello, Kareem Abdul-Jabbar and Kevin Smith.

  • Penny tries to throw a wrench into Leonard's plan to be a sperm donor for her ex-boyfriend; Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip aboard the "vomit comet."

  • Sheldon is thrilled to help Bernadette and Wolowitz navigate bureaucratic paperwork, until he discovers they are breaking the law; Leonard is disappointed when his friends exclude him from a scientific project.

  • Sheldon and Amy are thrilled when their super asymmetry theory is proven by two physicists, until they try to kick Amy off the Nobel nomination; Bernadette has a big success at work.

  • Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help; Koothrappali attempts to mend things with his ex-fiancee Anu.

  • Penny and Leonard organize a paintball game, which results in mayhem when Sheldon becomes jealous of Amy; Koothrappali catches Anu with her ex-boyfriend; Stuart doesn't want to move in with Denise.

  • A VHS tape from Sheldon's past inspires him not to give up; Bernadette turns into a pageant mom when she tries to help Wolowitz with his Magic Castle audition.

  • Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been discovered and disproved; Bernadette wants to beat Howard in a popular video game.

  • 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; Koothrappali and Anu try to get physical for the first time.

  • Leonard is caught between a rock and a hard place when he becomes responsible for distributing extra grant money; Bernadette turns the backyard playhouse into a hideaway to get away from her husband and kids.

  • When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party; Leonard is shocked when Penny doesn't remember their first kiss.

  • When Amy doesn't have time to work on super-asymmetry, Sheldon goes to great lengths to ensure she's available; Koothrappali doesn't want Wolowitz to join him in hosting a show at the planetarium.

  • When Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend, Leonard takes matters into his own hands; Bernadette and Penny take Raj's fiancée out to dinner to get to know her.

  • Life gets complicated when Stuart starts bringing his new girlfriend home; Penny and Leonard talk about starting a family; Koothrappali explores an arranged marriage.

  • Sheldon and Amy go crazy trying to figure out what "perfect gift" Leonard and Penny gave them for their wedding; Koothrappali decides to settle down and asks his father to arrange a marriage for him.

  • Sheldon and Amy's honeymoon runs aground in New York; Penny and Leonard discover they are uncomfortably similar to Amy's parents; Koothrappali insults physicist Neil deGrasse Tyson and starts a Twitter war.

Record to Watch Later

146 episodes will be broadcast over the next two weeks

    The Bitcoin Entanglement
    The Confidence Erosion
    The Matrimonial Metric
    The Solo Oscillation
    The Separation Triangulation
    The Bow Tie Asymmetry
    The Conjugal Configuration
    The Wedding Gift Wormhole
    The Procreation Calculation
    The Tam Turbulence
  • 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.
    Upcoming
  • 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.
    Upcoming
  • 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.
    Upcoming
  • 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.
    Upcoming
  • 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.
    Upcoming
  • The Bow Tie Asymmetry

    When Amy's parents and Sheldon's family arrive, everybody is focused on making sure the wedding arrangements go according to plan -- everyone except the bride and groom.
    Upcoming
The Big Bang Theory

More about 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?

Starring

Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Mayim Bialik, Melissa Rauch, Sara Gilbert

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