While Sheldon had a smart way to steal the show on The Big Bang Theory with his quirky and often inappropriate one-liners, ...

Penny was originally going to be Katie, played by Amanda Walsh, but audiences felt she was too mean of a character that ruined the show.

We know that Sheldon Cooper and sarcasm don't always go hand in hand. While Sheldon is well-versed in the intricacies of theoretical physics, the subtle art of sarcastic wit consistently leaves him ...