Not since Michael Jackson moonwalked across the stage at Motown 25 has a dance routine so electrified a crowd the way that Chris Brown's now legendary performance at the 2007 Grammys did. The multi-talented teenage superstar (who turned 18 shortly after the performance) has been an award-garnering machine since his 2005 self-titled debut, offering up a bankable, hip-hop-tinged take on pop and R&B best exemplified by his smash "Run It!" Brown has also collaborated with a number of marquee rappers including Juelz Santana, David Banner, and Lil Wayne.