The Big Bang Theory is an American sitcom created by Chuck Lorre and Bill Prady, both of whom serve as executive producers on the show, along with Lee Aronsohn, who is also one of the head writers. It premiered on CBS on September 24, 2007.
The show stars Jim Parsons as Sheldon Cooper, Johnny Galecki as Leonard Hofstadter, Kunal Nayyar as Rajesh Koothrappali, Simon Helberg as Howard Wolowitz, and Kaley Cuoco as Penny.
Parsons and Galecki reprise their roles for an episode of the show that Carter Pewterschmidt watches in "Business Guy". Penny appears as well, but has no speaking lines.
In "Welcome Back, Carter" Peter Griffin says he'll laugh at The Big Bang Theory with Carter Pewterschmidt's big screen TV, since the CBS sitcom is shown in high definition.
Brian uses Sheldon's catchphrase of "bazinga!" in "Our Idiot Brian", with Peter acknowledging that it came from the "gay scientist on TV."