Just found another great site with free high quality wallpapers ranging from Landscape, 3D, Japanese Anime, and many other categories. Most of them are in high resolutions too.
There are over 15,000 great quality wallpapers collection in the site ranging from 640×480 to 2560×2048 pixels in resolution! Now I’m very sure the owner of the site grab these wallpapers from DeviantArt, InterfaceLift, and many others, but it does make us much easier to find only the great ones.
My newest wallpaper that I use at home at the moment, taken from this site:
Check out the site, ImageFlash