Where to Watch
Availability for The Big Bang Theory varies by region and changes over time.
Episodes
Trivia about The Big Bang Theory
This was the second pilot produced for the show.
A different pilot was produced for the 200607 television season but never aired.
The structure of the original unaired pilot was different from the series' eventual form.
The only main characters retained in both pilots were Leonard (Johnny Galecki) and Sheldon (Jim Parsons), who are named after Sheldon Leonard, a longtime figure in episodic television as a producer, director, and actor.
A minor character, Althea (Vernee Watson), appeared in the first scene of both pilots that was retained generally as-is.
The show's pilot episode premiered on September 24, 2007.
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Cast & Crew
All actors →
Johnny Galecki
Leonard Hofstadter
Jim Parsons
Sheldon Cooper
Kaley Cuoco
Penny
Simon Helberg
Howard Wolowitz
Kunal Nayyar
Rajesh Koothrappali
Melissa Rauch
Bernadette Rostenkowski
Mayim Bialik
Amy Farrah Fowler
Robinson Green
Producer
Maria Ferrari
Executive Producer
Steve Holland
Executive Producer
Eric Kaplan
Executive Producer
David Goetsch
Executive Producer
Kristy Cecil
Producer
Steven Molaro
Executive Producer
Chuck Lorre
Executive Producer
Bill Prady
Executive Producer