Ever since Kaley Cuoco first appeared as Penny on the hit sitcom The Big Bang Theory, comedy fans haven't been able to get enough of her. Penny has made Cuoco one of the most beloved TV actors of the ...

Over the course of 12 seasons, the cast of "The Big Bang Theory" managed to get each other to break character on plenty of occasions.

‘The Big Bang Theory’ ended in 2019 but many of the original stars have already made surprise appearances on several spinoff shows ...