Here everyone can post artwork they are willing to release to the community for use in games. Not everyone can draw, so I'm sure there will be some grateful code monkeys out there who can get some nice artwork for free.
This can include static images, animation sheets, animated characters already in a .cap, bone rigged characters, etc, etc. Anything that might be useful that you don't mind letting everyone use unconditionally. If you want to post free for non-commercial use only, that's also fine but please make sure it it clearly stated.
Check this thread for some stuff people already posted:
Feel free to repost here if you like.