Betty's Graphics, good for older web graphics! thousands to choose from, too!
Pixelsafari, i mainly use this one for favicons but it has tons of variety!
The Frugal gamer, amazing for PS brushes and fonts!
Geoblinkies, of course we cant forget geoblinkies!
99Gifshop, Another good one for all sorts of graphics! This is where spinning goku is from!
ltelaiodipenelop, a good graphics collection. (In italian!)
SadGrl Online, a site for webmastery overall.
WordArt, a link to make old-windows-y word art graphics!
Web Badges World, a collection of over 4,000+ badges to add to your website!
Jvne's Stuff, just a random graphic collection.