<P> 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 . </P>
<P> 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 . </P>
when was the first episode of the big bang theory aired
when was the first episode of the big bang theory aired
September 24 , 2007
September 24 , 2007