Sheldon sitting at his computer in The Big Bang Theory. Few sitcoms are as successful as The Big Bang Theory. Running for 12 seasons on CBS, it follows Sheldon Cooper and his friends as they navigate ...

Sheldon Cooper (Jim Parsons) is a consistently rigid character throughout all 12 seasons of "The Big Bang Theory." While he eventually embraces romance with Amy Farrah Fowler (Mayim Bialik) and shows ...