Over the course of 12 seasons, The Big Bang Theory became one of the most popular sitcoms on TV, with a main cast that was just as charming as they were quirky. But beyond the main group, the show ...

With The Big Bang Theory running as long as it did, it's no surprise that it spawned its fair share of hilarious running gags ...

Jim Parsons is known the world over for his portrayal of Sheldon Cooper on The Big Bang Theory, but before joining the sitcom ...