Penny on 'The Big Bang Theory,' played by Kaley Cuoco, has both fans and critics, but viewers seem to all agree that the ...

Add Yahoo as a preferred source to see more of our stories on Google. Uncover the surprising reasons why so many fans disliked Penny and Leonard's relationship on The Big Bang Theory.

When a show is as sprawling and long-running as The Big Bang Theory, which ran for 12 seasons, some storylines are bound to fall by the wayside.

If you are picking a rewatchable episode, you are usually picking the purest version of what people watch the show for.

The Big Bang Theory welcomed a surprising new actor to the show 17 years ago that turned everything on its head.