A list of websites featuring original desktop wallpapers for Mac & PC (in no particluar order)

Special:
Click Here to get original, free desktop backgrounds for spring from http://wallpapers.graphicfreebies.com/

1. WallPaper Originals: http://WallpaperOriginals.com/ - Gateway site to free desktop wallpapers for Mac & PC from the following sites:
      Original Wallpapers from GraphicFreebies.com/: http://Wallpapers.GraphicFreebies.com/ - Wallpapers in a variety of sizes. Themes include calendars, seasons, holidays (Christmas, Halloween, Easter, Thanksgiving, New Years, Hanuka, Valentine's Day and more), agricultural themes, original art & fantasy, countries (including Canada, Egypt, Israel, India and more), foods (candy, fruit, nuts, vegetables, etc...) skyscapes, a stunning flower section and too many more to mention.
      Original Wallpapers fromAnimalSearch.net: http://Wallpapers.AnimalSearch.net/ - Domesticated to wildlife - hundreds of image to choose from an a variety of sizes.
      Original Canadian Desktop Wallpapers: http://DesktopWallpapers.ca/ - includes assorted Canadian themes from general Canadiana to individual communities such as Toronto, Ontario and Vancouver, B.C. as well as destinations such as the Columbia Icefields.
2. Digital Blasphemy: http://www.digitalblasphemy.com - Also a small free selection of digital wallpapers plus 3D tutorials.
3. Visual Paradox: http://www.visualparadox.com - Hi-res 3D desktop wallpaper and background screens for a variety of platforms, Free for your personal use.
4. Jon's Original Desktop Wallpapers: http://www.jonsplace.org/wallpaper.htm
5. Juvi's Original Wallpaper: http://www.geocities.com/juvinurse/wallpaper.html - Texas, New Mexico and other Southwestern graphics made into wallpapers.
6. Lollie.com Gallery: http://www.lollie.com/gallery/freegallery.html - Free desktop wallpapers
7. SaveThePig.com: http://www.savethepig.com/wallpapers.html - Keep the pig close to you. Download one of four free wallpapers and put them on your desktop.
8. Creative Uncut: http://www.creativeuncut.com/cat06.html - All the wallpaper images are only available in one resolution, but they will fit a smaller desktop too.
9. Delarge - original desktop wallpapers: http://www.delarge.co.uk/wallpaper
10. ForAnImage.Com: http://www.foranimage.com - unusual, original, over-the-top, desktop and computer wallpaper site.
11. Wallpapers-TLC: http://www.wallpapers-tlc.com - Original free wallpapers in several categories for your desktop.
12. packman3k: http://www.pacman3k.5u.com/wp.html
13. Wallpapers by Bannerz~R~Us: http://wtv-zone.com/BannerzRus/photos/wall.html - Original wallpapers in 800 x 600 pixels
        http://wtv-zone.com/BannerzRus/photos/3dwallpaper.html - Original, 3-D wallpapers in 800 x 600 pixels
14. ArjenTeam Wallpapers: http://www.arjenteam.net/arjenteamwallpapers/arjenteam_wallpapers.php?wp=1&Lang - Original Wallpapers for Anime, Manga and Video Games
15. clcDisCus Wallpaper: http://www.clcdiscus.com/Wallpaper.html - Tropical discus fish desktop wallpapers
16. Visions of Dreams: http://www.visionsofdreams.com - Free 3D wallpaper for your desktop.
17. Wallpapers-TLC: http://www.wallpapers-tlc.com - original free wallpapers in several categories for your desktop.
18. Snakeye Wallpaper: http://www.snakeye.com/wallpaper_1.html - Original Digital Desktop Wallpaper.