Raj Howard Leonard Penny and Sheldon looking at a computer on The Big Bang Theory - CBS Created by Chuck Lorre and Bill Prady, "The Big Bang Theory" was a massive success for CBS during its ...

Simon Helberg and Kunal Nayyar weren't only integral to "The Big Bang Theory's" main cast, but also livened up the set with their antics numerous times.

Even though Howard and Bernadette were parents to two children, The Big Bang Theory never had them appear on screen (except that one time).

Created by Chuck Lorre and Bill Prady, "The Big Bang Theory" was a massive success for CBS during its twelve-season and twelve-year run — and people talk about the best and worst episodes of the ...