Penny has a strange relationship with her family in The Big Bang Theory, and one mystery doesn't help matters.

In Season 7, Episode 14 of The Big Bang Theory, Billy Bob Thornton made a surprise guest appearance as a doctor in love with ...

While The Big Bang Theory has plenty of great characters, not all of them stick around until the end of the show.

When The Big Bang Theory first introduced Leonard Hofstadter and Penny, few could have predicted that their unlikely relationship would become one of the series' greatest things.

Chuck Lorre’s popular American sitcom, TBBT, or The Big Bang Theory, is one of the beloved comedy shows that premiered in ...

From Penny and Sheldon to supporting stars like Beverly and Mary Cooper, all The Big Bang Theory's heroes have one line that ...

Leonard's love interest in The Big Bang Theory was not well-received by fans. The character quickly became one of the most ...

The Big Bang Theory had quite a few impressive guest stars during its run. While a handful of guest stars appeared in recurring roles or had a big memorable guest appearance, but others appeared in ...

Johnny Galecki had appeared in multiple television shows and films before joining the cast of The Big Bang Theory. The ...

The Big Bang Theory followed its quirky group of geniuses and their friends through over a decade of laughs, love, and growth ...

Leonard, who is head-over-heels for Penny ... that a snapshot of it became Penny's fridge magnet later on in The Big Bang Theory. However, it could never have existed as it was shown to be ...