I was playing around with Windows 8 Developer Preview this morning and found out that you can have different wallpapers on each screen! you can even have a slideshow!
Here is how to do it: (This is my first ever tutorial, im no pro writer like The Geek, if you want, Geek, you can take this and put it in your blog, but I would appreciate some credit :) )
Right click your desktop > Personalize
Right-click an image...
MAKING A SLIDESHOW
After selecting a single image for one screen, you can then select multiple images and they should be different on each screen.
Sorry for not being that awesome, just wanted to get this out there because I havent seen any posts. Please comment, give hints, etc. but if you want to reproduce, I would reeeaaalllllyyyy like some credit :)
Edit by mod: no personal email addresses allowed (VM)