The Dissociated Mixes
Check out Adam Lindsay's latest post on Dissociated Mixes. He's got a pretty good collection of automatically shuffled songs that sound interesting and eerily different from the original. One example is this remixed audio/video of Beck's Record Club cover of "Waiting for my Man" by The Velvet Underground and Nico:
[youtube=http://www.youtube.com/watch?v=mlyfsOitsNw]