The Big Bang Theory' has completely changed my life.

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 have this thing. I've always been uncomfortable going to any party where people don't understand why I'm there. One of the best things about partaking in a show like this is, when I show up to events and parties now, they know me. I don't have to hear, 'Oh, you're an actor? Have I seen you in anything?' anymore. I used to have to start listing things off of my resume'. It's really nice not to have to do that anymore.

I was a very shy child.

I grew up with two different parakeets - one that lived for five years, and one that lived for 13 years - so I always had a bit of an attraction to birds and it's an oddly good fit to be in a movie about birdwatchers.

My Emmy competition is awfully good. My stomach is already in knots. The problem is that I don't drink, so I can't calm myself that way. I wish I could be better at pretending I don't care.

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