The Big Bang Theory (also abbreviated as TBBT) is an American sitcom created by Chuck Lorre and Bill Prady, both of whom serve as executive producers on the show along with Steven Molaro. All three also serve as head writers. The show premiered on CBS on September 24, 2007. The ninth season premiered on September 21, 2015.
The fourth season of the American sitcom The Big Bang Theory, began airing on CBS on September 23, 2010. During the season, actress Kaley Cuoco was absent from two episodes after she fell off a horse and the horse accidentally crushed her leg. When she returned to the series, she was shown working as a bartender instead of waitressing at her usual workplace, The Cheesecake Factory, to hide her injury. In January 2011, The Big Bang Theory was renewed for an additional three years; extending it through the 2013/14 season, for a fifth, sixth, and seventh season. Season four starts four months after the end of season 3.
The fifth season of the American sitcom The Big Bang Theory was originally aired on CBS from September 22, 2011, to May 10, 2012, over 24 episodes.
The third season of the American sitcom The Big Bang Theory was originally aired on CBS from September 21, 2009, to May 24, 2010, with 23 episodes. It has received higher ratings than the previous two seasons with over 15 million viewers. The Complete Third Season DVD erroneously credits Mark Cendrowski for directing nearly the entire season. Season three starts three months after the end of season two when the guys left for the North Pole.
The second season of the American sitcom The Big Bang Theory was originally aired on CBS from September 22, 2008, to May 11, 2009, over 23 episodes. The Complete Season DVD was released September 15, 2009, and a Blu-ray version was reissued on July 10, 2012, with remastered surround sound audio, whereas the DVD version only had stereo. Season two starts immediately after the end of season one with Leonard and Penny's date.
The first season of the American sitcom The Big Bang Theory was originally aired on CBS from September 24, 2007, to May 19, 2008, over 17 episodes. An unaired pilot also exists. The Season 1 DVD came without a gag reel and is, so far, the only Big Bang Theory DVD set not to have one. The reissued Blu-ray, was released July 10, 2012, and includes a gag reel that is exclusive to the set. The episodes on Blu-ray are all in remastered surround sound, whereas the DVD version had stereo.