Zuphoria – Oeuvre is an impressive collection of wallpaper images. The images are categorized as:

3d Glass
Abstract
Fantasy [Dreams]
Fantasy [Gurls]
Gothic
Natures Force
Space
Zeetha
Disney Classic
Marvel Comics
Simpsons

Today they have over 1000 images to choose from.

3dfiction hosts several futuristic monochromatic designs in xga, sxga and wxga formats.
Don’t miss the DVD with some of the designs in motion.
They also feature easy insert code for adding the images as background in MySpace.

wallpapers (1024×768 minimum) is the mother load of high res flickr groups. It is chock full of images tagged with wallpaper at a minimum resolution of 1024×768. 36,669 images and counting. This will take a while to go through.

Professional Wallpapers hosts a few HD images in a number of different formats. including 2560×1600, dual monitor, HDTV and PSP/iPod formats. Nice work.

desktopography is an exibition, a showcase of nature themed desktop wallpapers created by designers worldwide.
This site is awesome! great visuals and great music! Lots of great, hi def and large format wall paper and all around great design. Check them out.