Let me just announce that Badassbill's site, The Spriter's Resource, is active again from a 5 month hiatus. The site has thousands of sprites from other games and is definitely worth checking out. :D
Want to give some dough back to all those amazing pixel artists? Donations provide prize money for contests, help cover hosting costs and support new initiatives.
Wow, that's a ton of fun to browse through. Too bad the navigation uses pop-ups.