Great list. I’d have to add Art of Business and Motion to that list. You might want to check it out. They cover a lot of business aspects of motion graphics, as well as lots of international work. Many of the spots I’ve seen on that site are quite inspirational. A lot of times when I hit a wall, I’ll check out what’s new in the idents section. You should check it out too. They just posted a SUPER crazy ident from FOX, take a look!

http://dennytu.wordpress.com/2009/04/10/fox/