I recently created a special wallpaper version of the Ornament(al) Skull for my friends The Gaskets. Check it out in use (for a limited time only) on their site (and be sure to listen to their music as well!).
p.s. I should note that b13 submitted some lovely wallpaper suggestions using the Ornament(al) Skull shortly after I made it (great minds think alike!), so keep an eye out for them in a future Braincase.