Now that it's been made available after a little bit of tinkering by clarknova
(THANKS!), I thought this would be a good place to share sleep backgrounds.
Here's my collection which are a bunch of Nintendo related old-school box art and screen shots from title-screens and some in-game images. Of note are a couple stages of Super Mario Bros. that I've found the maps for, and cut them into a nice 600x800 picture ala below:
Anyways, share alike!
**updated 2009/03/05 - brightened images up, and added ingame screenshots and title screen shots of a lot of games **