The Big Bang Theory fans showed their love for the show with their reactions to this season 1 moment featuring Penny (Kaley ...

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

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

But what if one pair straight up never met while filming? And what if they didn't actually meet for the first time until ...