Comedy is a serious business. It's frustrating when I can't find the right thing that makes the crew laugh. If I don't make them laugh, I get very disappointed in myself. You don't really have a live audience, so you just depend on the crew to let you know if you're doing something funny.

The live aspect is so thrilling, I get nervous again. It's like going on stage.

With John Wayne Gacy - the serial killer who dressed up as a clown - there's just something about clowns I don't trust. I don't think they're particularly funny. They're a little spooky. Not my sense of humor, I don't laugh at clowns.

I guess my height has hurt me as much as it's helped me. In comedy people don't mind casting tall women next to shorter men. It adds to the humour.

The wonderful thing about Crystal in Mr. Sunshine is that she doesn't have any boundaries. She's not aware socially of what's correct and incorrect. Crystal's probably the craziest character I've ever had to do and the furthest I've gone, with the only exception being Away We Go - I was pretty big in that.

I am lucky enough to have Aaron Sorkin write what I have to say.

I always feel like a doctor who loses a patient on the operating table or something where I felt just devastated and I beat myself up until I get to try it the next night and “I'll get it better tonight.” So I'm hard on myself. I think I'm not alone in that regard with acting.