title: The Big Bang Theory (season 1)
context: 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. Two of the main cast, Sheldon and Leonard, are named after actor, director, and producer Sheldon Leonard.[1]
question: When did The Big Bang Theory first air on television?
answers: September 24, 2007