Hacked Mario levels play themselves
A few enterprising, creative and time-rich folks have put together a few Super Mario Bros. 3 levels, presumably by hacking ROM's. These levels, however, are designed to play themselves. Follow Joystiq link below for a small collection of Rube Goldberg video goodness. Two of my personal favorites are embedded below.
Break.com claims that this is the only Mario level that plays itself, but we know better.
Via Boing Boing and Joystiq