I thought this discussion was great. I'm not sure if it's as exciting without being their live, but if you have an hour, it would be worth watching. Check out all the videos here.
And you can start with Part One below:
On a similar note, American Artist has released a special "Workshop" magazine that focuses on the "Masters" event. The price is fairly high at $20, but if you didn't have a chance to go, or you want a little keepsake if you did go, it might be worth the price. I initially thought the price was so high because of the included DVD, but the videos on it are more sales pitches than a documentary of the actual event. If you do want it though, you should hurry to your local book store, my Barnes & Noble only had one copy left.