Wallhaven - Your source for the best high quality wallpapers on the Net!
Celwalls.com - Celwalls.
InterfaceLIFT - High-resolution widescreen wallpapers, desktop icons, and themes for Mac OS X, Microsoft Windows...
WallpaperFusion - The best multi-monitor and Eyefinity wallpaper images, all in one place!
HDwallpapers.net - HDwallpapers.
Digital Blasphemy - Hi-res original 3d-rendered computer desktop wallpapers.