The Big Bang Theory beginning any other way than Sheldon, Leonard, and Penny tumbling into an unconventional friendship across the hallway is unimaginable.

There is one issue that almost every sitcom faces and The Big Bang Theory was ready to tackle it. I'm glad they changed it to ...

An early interaction between Penny (Kaley Cuoco) and Sheldon (Jim Parsons) on The Big Bang Theory proved to be the key to ...

Before The Big Bang Theory became the popular sitcom we know today, it started with a different version that never aired.