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The Big Bang Theory

The Big Bang Theory

Photo Credit:  Adam Taylor / Warner Bros.
  • Premiered: 
    September 24, 2007
    (Click date to see TV listings for that day)

  • Network: CBS
  • Category: Series
  • Genre: Comedy (Sitcom)
  • Type: Live Action
  • Concept: 
    Created by Chuck Lorre & Bill Prady 
  • Subject Matter:
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Plot Synopsis

Roommates Leonard and Sheldon are brilliant physicists -- the kind of geeks that understand how the universe works -- but none of that genius helps them interact with people, especially women. All this begins to change when a free-spirited beauty named Penny, a waitress at The Cheesecake Factory, moves in next door and teaches them a thing or two about life. Sheldon spends his nights video-chatting with Amy Farrah Fowler and playing Klingon Boggle with their socially dysfunctional friends, fellow CalTech scientists Wolowitz and Koothrappali. Leonard saw a whole new universe of possibilities in Penny, including an on-again, off-again girlfriend. Wolowitz' new wife, the adorable micro-biologist Bernadette, rounds out this group of geeky friends. Season 6 opened with Wolowitz in space, where he's caught in an argument between Bernadette and his mother, and closed with Leonard being offered an excited job opportunity overseas, which threw he and Penny for a loop. Season 7 of THE BIG BANG THEORY debuted on CBS on Thursday, September 26, 2013 at 8pm ET/PT, with back-to-back new episodes. In the season opener, Sheldon and Penny spent quality time together, sharing intimate secrets, while Leonard was away on his job in the North Sea. In the night's second episode, Leonard's friendship with Sheldon was put to the test when he returned from the North Sea. On Wednesday, March 12, 2014, CBS announced that it picked up THE BIG BANG THEORY for three more seasons, extending it through the 2016-2017 season. Season 8 premiered on Monday, September 22, 2014 at 8pm ET/PT on CBS with back-to-back new episodes, as THE BIG BANG THEORY aired on Mondays through October 20, moving to Thursdays at 8pm ET/PT starting on October 30. In the season opener, "The Locomotion Interruption," Leonard and Amy take an unexpected road trip to Arizona to pick up Sheldon. Meanwhile, Penny interviews for a job at Bernadette's company, and Howard is weirded out by Stuart's relationship with Mrs. Wolowitz. Then, in the second episode on premiere night, "The Junior Professor Solution," Howard surprises everyone by taking a class that Sheldon is forced to teach. Meanwhile, the tension between Penny and Bernadette gives Amy a chance to play both sides. THE BIG BANG THEORY returned for its ninth season on Monday, September 21, 2015 at 8pm ET/PT on CBS, airing on Mondays at 8pm ET/PT through the end of October and moving to Thursdays at 8pm ET/PT on November 5, 2015. In the season opener, "The Matrimonial Momentum," after driving to Vegas to get married, Penny struggles with Leonard's confession that he kissed another girl. Also, Sheldon doesn't know how to act after Amy pushes pause on their relationship. Season 10 of THE BIG BANG THEORY premiered on Monday, September 19, 2016 at 8pm ET/PT on CBS. In the season opener, "The Conjugal Conjecture," after Sheldon's mother and Leonard's father share an evening together, everyone deals with an awkward morning the next day. Also, Penny's family arrives for the wedding ceremony, including her anxiety-ridden mother, Susan (guest star Katey Sagal), and her drug dealing brother, Randall (guest star Jack McBrayer). Also, Dean Norris guest stars as Colonel Williams, an Air Force Representative from the Department of Materiel Command. Christine Baranski, Laurie Metcalf, Judd Hirsch and Keith Carradine return in their recurring roles. Season 11 of THE BIG BANG THEORY premiered on Monday, September 25, 2017 at 8pm ET/PT on CBS, with returning guest stars: Laurie Metcalf as Sheldon's mother, Mary; Riki Lindhome as Ramona; and Stephen Hawking as himself. In the season opener, "The Proposal Proposal," Amy gives Sheldon an answer to his proposal while Howard and Bernadette struggle with some unexpected news.
On Thursday, May 10, 2018 at 8pm ET/PT, CBS premiered "The Bow Tie Asymmetry," the Season 11 finale of THE BIG BANG THEORY. 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. Guest stars include: Kathy Bates, Mark Hamill, and writer and producer Teller. Plus, John Ross Bowie, Courtney Henggeler, Lauren Lapkus, Laurie Metcalf, Jerry O'Connell, Brian Posehn and Wil Wheaton return. Two months earlier, CBS announced the THE BIG BANG THEORY has been renewed for its twelfth season.


Production & Distribution

  • Produced by Chuck Lorre Productions
  • In association with Warner Bros. Television


  • Caltech - Pasadena, California USA
  • Sheldon & Leonard - Pasadena, California USA

Births, Deaths & Weddings

  • May 10, 2012: Bernadette Rostenkowski and Howard Wolowitz are married
  • May 1, 2014: Arthur Jeffries (aka Professor Proton) dies
  • September 21, 2015: Leonard Hofstadter and Penny elope
  • September 19, 2016: Leonard Hofstadter and Penny are married
  • December 15, 2016: Halley Wolowitz is born
  • March 1, 2018: Neil Michael Wolowitz is born
  • May 10, 2018: Amy Farrah Fowler and Sheldon Cooper are married