I think I'm going off the rails, down in Crazy Train....
Voicedude recently released an Ozzy double pack, and it's really quite excellent. He mashes Crazy Train with LMFAO and then with The Killers. The art of the Mashup - at it's finest!
Voicedude - Crazy Rock Anthem
http://youtu.be/tfoWEPJOxY0 - http://vimeo.com/37393612 - mp3 - Ozzie Osbourne "Crazy Train" vs LMFAO "Party Rock Anthem"
Voicedude - The Oz Bones
http://soundcloud.com/joel-stevenvoicedude/the-oz-bones - mp3 - Ozzy Osbourne "Crazy Train" vs The Killers "Bones"