Nayyar played the astrophysicist Rajesh "Raj" Koothrappali across the sitcom's full 12-season run on CBS. Kunal Nayyar's ...

Kunal Nayyar recently revealed that he frequently could not keep a straight face as his character Raj Koothrappali while ...

The Big Bang Theory reunions, but the latest one reveals the sad truth about the Pasadena gang actors years after it ended.

In The Big Bang Theory's tenth season, the episode "The Hot Tub Contamination" shows Sheldon telling Penny why he does this.