Elisabeth Moss plays Peggy so well, it's hard to imagine her doing anything else. Unless, of course, you saw her on The West Wing, in the indie flick Virgin, or dancing with The New York City Ballet. Now Moss is making her Broadway debut in David Mamet's Speed-the-Plow. She talks with AMCtv.com about the latest episode of Mad Men and the upcoming play

Q: What's it like working with Mad Men's newest cast member Colin Hanks who plays Father Gill?

A:  He's a huge fan of the show which is really great, because it made me comfortable right away. Having somebody come in who has done a lot of work, and his father is Tom Hanks, then say he's a huge fan of the show just put me at ease. It made me feel like "OK, we can just be friends now." You get over his last name really fast.

Q: In the scene where Peggy is holding the baby while her sister goes to communion, how did you get the baby to cry like that?

A: I swear to God, it was written in the script that the baby cried when he was handed to me, and I swear to God, the baby cried every single time. Every single time on cue. So I don't know if that was a reflection on me and my baby-holding skills or if he wanted his mom, but it just cried every time it was handed to me.

Q: What drew you to Mamet's play?

A: There's no one that would turn down a chance to do his work. For me, it was a combination of a Broadway play, working with the actors that are in it, David Mamet and getting to do theater perfectly slotted during our hiatus... if we are lucky enough to go to a Season 3.

Q: The play is about people willing to sell their souls for success in Hollywood. Does it ring true?

A: I think that I've been lucky enough to work on really good material with really good people who have their heads and hearts in the right places. But that's not to say I haven't turned down things that were not so great or seen some things that were not so pretty.

Performances of Speed-the-Plow begin Friday, October 3 with an official opening set for Sunday, October 26 at the Belasco Theatre in New York.