Webshots! Over 1000 screen saver and wallpaper photos. Free Download!
You can download photos from this site. Then, you can put them on your computer screen desktop, with the Webshots wallpaper manager.
NOTE: I, your Webmaster, am using this dandy software. I copy the Diodon & Crew photos into the photo manager and run them as a screen saver and as computer screen back grounds.