Playing Sheldon is just heaven for me. I realize how enormously lucky I am to play a role that makes me so incredibly happy. As I told Chuck Lorre in a Christmas card a few years ago, I'm living a version of the dream.

I try to master every facet of a character in order to build a safety net for myself, so I can go on to take more risks to create someone really distinct.

I think intelligence is usually sexy until it becomes irritating. After that, you're stuck.

I think in any form of acting, you're always well served if you've done theater.

I love seeing tennis up close.

I didn't have an imaginary childhood friend, but I did one day imagine somehow tiny green men, and they were only tiny and green because my brother had a ton of toy soldier toys that came on a skateboard plank type of thing, and I just envisioned in this car driving to church with my mom, they were there.

(Wil Wheaton) was so fun to have on the set, and he was such a good guy, just in general. He seemed to be completely okay with the fact that his entire name became a mantra of vengeful hate. That didn't seem to bother him.