What do you think is the best background for linux?

[dalekirkwood]

I was wondering what everyone thinks the best background is for linux

personally i use

http://www.neowin.net/forum/uploads/monthly_05_2010/post-317332-12744518659446.jpg

[clanky]

http://ubuntuforums.org/showthread.php?t=1693110

[gintovan]

Black!

I have never used a picture as background, it's distracting and messy :D