Right now I'm at a library who has the basic emachines background. My one at home is of South Park's Goth kids with the lyrics to Teenagers by MCR
My laptop wallpaper is still the same but my PSP wallpaper is a cool picture of Buttercream Sundae from the LPS episode Topped With Buttercream and my PS3 wallpaper is a cool picture of Zoe Trent (best LPS character ever) with stars and purple balls and lines everywhere.
Ye olde Venice. No ponies though :C (Pretend that the lion statue of the Most Serene Republic of Venice is a pony)
Good enough? I change it really often tho'. I always use self-made wallpapers. Photoshop and effects in it are my friends.