Great places to get wallpapers

Some of my friends like my wallpapers on my clie or my desktop, so here's where I usually get my wallpapers:

1. JAL壁紙コレクション:
   Japan Airlines has a great colection, renewed monthly usually comes with a calender.
2. deviantart.com :
   A great site to get art, photograph, GC, skins and much more.
3. National Geographic:
   I guess everyone knows this is a great destination if you're into photographs.

As for anime, some are great, but I don't like them to be my wallpaper, they usually make it look messy, expecially if you have a desktop full of shortcuts/icons. As a rule for a clean look, I stick with photos and keep the number of icons on my desktop under 5.