If I'm not like my characters, I think just it's like a musician liking to play certain pieces of music rather than others. I just have more satisfaction when playing complicated things rather than some of your more straightforward, simple moments. . . . I like to be challenged.

I'm a champion napper. For the past decade, I've taken a nap at lunch on set. I have a noise machine app on my phone, headphones - and that's key. That's probably the most important thing. If I can get an eye mask on, that's great. And that's it. After a half an hour, I'm like a new person. It's just in that first half an hour, don't talk to me.

I love working with male actors, and I think there's a tendency to write really interesting characters that would work solely alongside men where they would be in a man's world and have to deal with that, and it creates a lot of interesting storylines. For me, it's kind of circumstantial, but I definitely enjoy it.

At 15, you have to decide if you're going to go into professional dancing and really pursue it. I just a) knew that I couldn't stop acting, and b) I had that sort of foresight to understand that when I was 35 - if I was lucky and if I hadn't gotten injured - my career would be on its way to ending. Now, at 34, I really understand that. But at 15, I understood that as well. I was like, "I can't. That's just too risky.".

To go from Girl, Interrupted, where I had to cry every day, to a TV show like West Wing where I get to laugh and joke around every day, has been a welcome relief.

I don't feel I was ever a 'famous' child actor. I was just a working actor who happened to be a kid. I was never really in a hit show until I was a teenager with West Wing playing First Daughter Zoey Bartlet. In a way, that was my saving grace - not being a star on a hit show. It kept me working and kept me grounded.

Anytime you have a female protagonist, it's going to turn into some feminist angle, and it's not a conscious thing on my part. It's only recently that that's been pointed out by the media . . . or pointed out by fans. I also find complicated, flawed characters interesting. What's the opposite? To play one-dimensional, boring failures?