David Petersen's interviewed in The Lord of the Cheese: 'Mouse Guard' by Scott Rosenberg at Readexpress.com (June 13, 2007).
I ran into Scott today and he said that a couple more interviews are forthcoming.
Also his compadre Nate Beeler has an absolutely awesome political cartoon in today's Examiner. You've got to love that Gitmo Frankenstein.
Finally, both free papers, the Examiner and the Express ran the same Associated Press article by Frazier Moore on the new Comedy Central animated series, Li'l Bush. One could probably find the article through either of the above links fairly easily.