Remember the Moog doodle that Google put up to honor synthesizer pioneer Robert Moog? Wired's Underwire blog has a round up of the geekiest cover tunes recorded by web artists from around the world: Link
The one above is the cover of Daft Punk's Aerodynamic by Brett Domino.
I made a bunch of my own covers using the synth. Some got featured by Wired.com and some took 8 hours! Hope you like them :)
http://www.youtube.com/playlist?list=PLE2D00F5DD78F8BD4