Chris Brown

In November 2005, Chris Brown's Scott Storch-produced "Run It!" -- a rewrite of Usher's "Yeah!" -- topped the Billboard Hot 100, making the 16-year-old singer the first male artist in over a decade to achieve the feat with a debut single. While there was nowhere to go but down, at least in terms of chart positions, the pop-oriented R&B vocalist was only getting started. By the end of the decade, he was one of the biggest active pop stars, with a clutch of Top Ten singles and platinum albums to his credit, along with constant comparisons to Michael Jackson and several acting ro...