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

When a series runs for 12 seasons like The Big Bang Theory, it gains millions of viewers who love the show. There might be ...

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 fans finally got a reunion between Johnny Galecki and Kaley Cuoco, but it’s not what many expected. The two actors, best known for portraying the on-screen couple Leonard and Penny ...

The Big Bang Theory knew how to blow up the ratings, and now the numbers are doing all the talking. Read on for the most ...

Actress Melissa Tang is no stranger to the extended The Big Bang Theory world since she has the distinction of appearing on all of the spin-offs and reboot shows within the franchise.

But the show's very talented cast helped lend The Big Bang Theory more substance, especially as the show went on. Here's what ...