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 think any of us could have possibly anticipated how successful Mad Men has been. When we were working on the pilot, we loved it. We thought it was special. We hoped and prayed it'd be a success. But, we didn't count on it.

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 think my guideline has been to find things that inspire me. And as long as I stick to that, I don't think I'll have any problems crossing over to becoming an adult actress.

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.

When you audition for things, there's pressure to go in there with a complete performance, and it's kind of unfair because, if you get it, you'll have rehearsal and talk about it, and you'll have plenty of time with the script. So, for me, I really do feel like an audition is a sketch of what you might do.

I think one of my biggest influences is Bette Davis. I've seen almost every one of her films, and she's been very inspiring to me.