Starry Night

If you recently upgraded to Leopard like me (and every other mac-geek on the planet), you might want to replace the horrible default desktop picture (healt alert: it causes cavities) depicting the space/starry night image.
It pops up everywhere and, most annoyingly, at login screen.

Piece of cake, replace the default .jpg file at:
/System/Lybrary/CoreServices/DefaultDesktop.jpg
You need to have privileges to do this, obviously.

I decided to use a simple gray picture: download it here if you want.