After a few years, The Big Bang Theory officially clarified the mystery about Penny's last name, and it highlights a harsh truth.

The character of Penny wasn't in the original pitch for the sitcom The Big Bang Theory, but the original neighbor character was reworked into the Penny that fans know and love. We got to learn a lot ...

The cast of "The Big Bang Theory" earned universal fame and acclaim for their celebrated sitcom ... but they also experienced ...

Although The Big Bang Theory’s worst mistake came relatively late in the popular sitcom’s 12-season run, the series still never recovered from this easily avoidable blunder. By The Big Bang Theory’s ...

Kaley Cuoco's fiancé Tom Pelphrey has never watched her hit sitcom The Big Bang Theory. The 40-year-old actress played waitress Penny in the long-running CBS sitcom which also starred Johnny Galecki ...