When did The Big Bang Theory first air on television?
The Big Bang Theory (season 1)
The program's initial pilot, developed for the 2006/07 television season, was substantially different from its current form. Only Johnny Galecki and Jim Parsons were in the cast, and their across-the-hall neighbor Katie was envisioned as "a street-hardened, tough-as-nails woman with a vulnerable interior".[3] Katie was played by actress Amanda Walsh.[4] They also had a female friend called Gilda (played by Iris Bahr). The program's original theme music was also different, using Thomas Dolby's hit "She Blinded Me with Science". The program was not picked up, but the creators were given an opportunity to revise it, bringing in the remaining leading cast and retooling the show to its current format. The original unaired pilot has never been released on any official format, but copies of it are on the internet with various collectors.