Here is a thread devoted to people who made artwork in Photoshop, and recorded videos of the process. 2 cents: I recommend you check out his other videos, they're really good!
I seem to recall reading somewhere that some of the animation in Aqua Teen Hunger Force is done in Photoshop. The video above is quite fascinating.
1. Never even knew that. Neat! 2. Totally agree, especially with how well-planned the concept was. OT: I recommend you check this guy out, he does pretty good work!
