I just heard about this recently. If you're in the LA area, you should think about taking in part of this festival. It's taking place at the Egyptian Theatre in Hollywood, Sept 8-17th.
I'm planning on going on the 16th. The line-up that day is incredible.
For instance: there is an animation segment showing lots of 3-D classic cartoons, and one of the special guests will be the one and only Jerry Beck. He is one of the foremost authorities on classic animation alive today.
Also, the movie "Charge At Feather River", where the "Wilhelm" scream got it's name, is showing. I can't wait to see (and hear) that!
Thanks to Steve Lee for informing me of this great festival!