Desktopography is a stunning non-profit project where designers from all over the world create nature / topological themed wallpapers. As said on their site:

Designers spend about 90% of their waking life in front of a computer so the most appealing genre for a wallpaper would be one that has beautiful design mixed with the all important aspect of being outdoors.

Each year a new wallpaper exhibition is released, now it’s time for the 2009 one!  Here below, you will find some previews of the wallpapers I’ve selected from the exhibition, the ones I truly like.