Q+A with Kieran at AMC website
Q: What's been your favorite scene to act out in all of Season 4?
A: Unfortunately I can't discuss it because it's in an upcoming episode.
Q: Any runner-ups?
A: I really liked the fall in Episode 9 -- the trip. It was my first time doing a really big stunt and I thought it was fun. I have done tae kwon do for a long, long time, and I'm a gymnast, so I wasn't too worried about the stunt. I had done some stunts before. I was more excited than worried.
Read the whole thing here: http://blogs.amctv.com/mad-men/2010/09/kiernan-shipka-interview.php
She is almost scarily precocious. :-)