The original version of Big Bang Theory's Penny looked much different from the one played by Kaley Cuoco.

Sheldon and Penny have a strangely tight-knit friendship on "The Big Bang Theory," but this can easily be explained by one ...

Sheldon Cooper (Jim Parsons) is the heart and soul of "The Big Bang Theory" — for worse or for better, depending on how you feel about the sometimes controversial, sometimes abrasive character.

The Big Bang Theory is, at its heart, about relationships. The geek culture references, cameos, and science speak are dressings, and funny ones at that. But from the very beginning, the series set ...

In the penultimate episode of "The Big Bang Theory," Sheldon and Amy win the Nobel Prize. While their accomplishment should ...