In 2008, Amplive, one half of California Hip/Hop duo Zion, took Radiohead's acclaimed "In Rainbows" and took it into his chop shop. The result was his controversial mixtape, The Rainydayz Remixes, which was only recently released officially after copyright issues were resolved with Radiohead. IMO, you need to do a pretty damn good job in order to do Radiohead justice, and Amplive might have done just that.
Below is both my favorite cut off of the mixtape and the mixtape itself. Enjoy.