A heartfelt speech, a somber agreement, a prank involving zombies — it's moments like these that make The Big Bang Theory legendary, even years after its final wrap. These are the show's biggest ...

Add Yahoo as a preferred source to see more of our stories on Google. The Big Bang Theory was a pretty carefully-scripted sitcom, but when you get so many funny people together on one stage, you're ...

"Like everybody on this cast, it's when Penny gave Sheldon a napkin signed by Leonard Nimoy that also contained his DNA, and he hugged her. We all got choked up. It was a powerful moment. It was funny ...

To underscore those rare instances when he succumbs to his humorous side, Sheldon will punctuate his jokes and pranks with the triumphant exclamation “Bazinga!” after (sometimes long after) his jokes ...

The Big Bang Theory was a pretty carefully-scripted sitcom, but when you get so many funny people together on one stage, you're bound to get a little improv. Here are a few unplanned moments that made ...