Skrillex - Scary Monsters and Nice Sprites (Acapella)
This is one of the strangest videos I've ever seen. A young man has apparently been able to duplicate the noises featured in the Skrillex song "Scary Monsters and Nice Sprites" using just his mouth (and a video editor, of course). The result is a strange cacophony that is oddly accurate, even down to the screechy high hits, and disturbingly low pulsating basses. You either give the man for having a crapload of talent, as well as way too much free time.
And, yes, you can download it right here