G4's Attack of the Show! had an interview with Mark Hamill at Comic Con mostly about the movie he's making for his comic The Black Pearl. He talked a little bit about it in Jimmy's interview.
If you missed the show, you can check it out if you have iTunes on Attack of the Show's Daily Podcast. They might have it up on their website www.g4tv.com somewhere too, but I'm not sure.
The best part of the interview is when he does his Joker voice from the animated series, not gonna lie.