Waitress, struggling actress, pharmaceutical sales rep...and government spy? There might be more to Penny than meets the eye.

Raj dated several women over the seasons but didn’t end up with anyone in the finale.

Fans suspect Penny’s dark secret explains why she forgave Leonard so quickly on The Big Bang Theory. Kaley Cuoco might not ...

The Big Bang Theory has become an absolute fan favorite. The crazy stories about "Sheldon", "Leonard", "Penny", "Raj" and ...

Rajesh Koothrapalli has five siblings - three brothers and two sisters in The Big Bang Theory.