Justin Bieber was the latest guest on Spike's new show, Lip Sync Battle, where he engaged in an intense showdown against former NFL player Deion Sanders. While Deion turned up the heat with a hilarious, but solid performance of Madonna's "Like a Virgin," Bieber brought the house down when he pulled off an insane rendition of Ozzy Osbourne's "Crazy Train," which featured a full blown Ozzy costume and all. It's really a must-watch experience.