The Big Bang Theory is a popular American sitcom from Chuck Lorre Productions and Warner Bros. Television. The Big Bang Theory is currently in its tenth season.

The Big Bang Theory stars Jim Parsons, Johnny Galecki, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Mayim Bialik and Melissa Rauch. The Big Bang Theory was created by Chuck Lorre and Bill Prady, both of whom serve as executive producers along with showrunner Steven Molaro.

The Big Bang Theory is centered on physicists Sheldon Cooper and Leonard Hofstadter, whose geeky and introverted lives are changed when Penny, an attractive waitress and aspiring actress, moves into the apartment across from theirs. Penny quickly becomes a part of Sheldon and Leonard's social group, which includes the equally geeky engineer Howard Wolowitz and astrophysicist Raj Koothrappali, with Penny's common sense and social skills and the guys' geeky interests expanding each other's worlds. The newest additions to the group are Howard's wife Bernadette Rostenkowski-Wolowitz and Sheldon's girlfriend Amy Farrah Fowler.

Big Bang Theory

Broadcast History


The Big Bang Theory was originally developed for the 2006/07 season, though the pilot did not get picked up. The pilot was markedly different from the pilot which would eventually air. Only Jim Parsons and Johnny Galecki were part of the unaired pilot, which featured a much tougher character in the role that would become Penny in the second pilot. The pilot was rewritten and Kaley Cuoco, Simon Helberg and Kunal Nayyar were cast. The retooled show was picked up by CBS in May 2007 with a thirteen-episode order for the 2007/08 season and given the 8:30 time slot on CBS's popular Monday night comedy block, sandwiched between How I Met Your Mother and Two and a Half Men.

The Big Bang Theory premiered on September 24, 2007 and ran eight episodes before the 2007/8 Writers' Strike halted production. Following its modest ratings success in the Fall, CBS renewed the show for a second season in February 2008. The Big Bang Theory moved to Mondays at 8:00 in March 2008 when new episodes resumed following the strike. The show finished the 2007/08 season ranked #68 in the ratings. The Big Bang Theory returned for its second season on September 22, 2008 and saw its ratings continue to rise. The show got a two season pick-up in March 2009, taking it through to its fourth season in 2010/11. The Big Bang Theory finished its second season at #44 in the ratings.

CBS moved The Big Bang Theory to Mondays at 9:30, following the then-#1 sitcom Two and a Half Men, for its third season. The show would finish the season as the #12 ranked show on TV. For its fourth season, CBS moved The Big Bang Theory to Thursdays at 8:00 where it would lead a new comedy block. The Big Bang Theory was renewed for a further three seasons in January 2011, taking it through to its seventh season in 2013/14. The show finished its fourth season as the 13th most-watched show on TV.

The Big Bang Theory's popularity continued to rise in its fifth season, during which it reached 100 episodes and started airing in syndication. The Big Bang Theory became the US's top-rated sitcom in the 2011/12 season and was the 8th most-watched program on TV. The sixth season saw ratings rise further, hitting twenty million viewers for the first time. The Big Bang Theory averaged 18.68 million viewers during its sixth season and was the 3rd highest-rated program on TV.

The Big Bang Theory was renewed for another three seasons in March 2014, taking the show through to its tenth season in 2016/17. During The Big Bang Theory's seventh season, the show ranked as the top-rated scripted program on U.S. television, overtaking CBS drama NCIS. Before production on the eighth season of the show began, the five original cast members all signed new contracts to return to the show for the next three years. Mayim Bialik and Melissa Rauch had already signed new contracts in September 2013.

After CBS won the rights to air Thursday Night Football matches between September and November 2014, the network made the decision to move The Big Bang Theory to Monday nights for the start of its eighth season. Six episodes of the eighth season aired on Monday between September 22 and October 20. The show moved back to its regular Thursday night time period on October 30. Although The Big Bang Theory's ratings fell year-to-year during its eighth season, the show remained the #1 sitcom on U.S. TV.

The Big Bang Theory began its ninth season on Monday, September 21, 2015, starting the season on Monday nights to make room for Thursday Night Football. The Big Bang Theory moved back to its regular Thursday night slot on November 5, 2015. The Big Bang Theory's ninth season consisted of twenty-four episodes with the season finale broadcast on Thursday, May 12, 2016. During the 2015/16 season, The Big Bang Theory was the highest-rated and most watched sitcom on television. The Big Bang Theory had an average of over 15 million viewers per episode and an average rating of 3.7 in the key 18-49 demo for its ninth season.

The Big Bang Theory began its tenth season on CBS on September 19, 2016.