Why did Sharon Stone slap Kaley Cuoco multiple times on set?

While playing Penny, the beautiful waitress and aspiring actress who lives next door to geeky scientists, Cuoco co-starred alongside the likes of Laurie Metcalf, George Takei, Keith Carradine and Charlie Sheen, she noted. Insider.

And the actors weren’t the only bigwigs waltzing on the show’s set — the comedic writing legend Stan Leethe astrophysicist Neil deGrasse Tysonformer basketball star Rick Fox and even Stephen Hawking they graced the spectators with their presence.