The photos are so good that I have started to use wallpaper on my PC again. I have not done this since Windows 3.1 was new.
HDRwalls.com has free High Dynamic Range (HDR) wallpapers for Mac OS X, Microsoft Windows, Linux, Blackberry, iPhone, iPod, and PSP. HDR images are created by taking multiple shots exposed for the highlights, mid-tones and shadows separately and then merged into a single image. This process results in incredibly vivid images.