Originally Posted by Starwars 
I'd seriously recommend watching the presentation video, it's A) informative and B) funny as hell. Truly hilarious stuff.
+1
I was sold on AP before watching this. Now, I am doubly sold!
Really though, it is well worth a watch, even if you have no interest in AP. It was fun and gave us "lesser mortals" a glimpse of the huge amount of work needed to create an RPG.