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

Young Sheldon is filled with small but significant nods to The Big Bang Theory, references that go beyond Sheldon’s quirks and pop culture obsessions. These moments not only tie the prequel to its ...

The Big Bang Theory was at its best when referencing geek culture, especially during the special episode that celebrated Star ...

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