HDRWall.com offers a quite a large range of HDR (High Dynamic Range) wallapers to shine your Windows desktop. If you don’t knw what HDR is, it is a photography technique which combines several light exposures of an image resulting it images with vivid colours and contrasts. The end result is a high quality wallpaper ready to shine your desktop. You can see the following for a very good example.

These wallpapers are available for Windows, Mac-OS X, Blackberry, iPhone, iPod, and PSP. The wallpapers are available for resolutions for upto 2560×1600. They currently offer about 500 wallpapers. Get some for desktop