In 2005, Chris Brown's "Run It!" topped Billboard's Hot 100 and Hot R&B/Hip-Hop charts, which made the 16-year-old singer the first male artist in over a decade to achieve the feat with a debut single. By the end of the decade, Brown 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 roles on the side. His momentum slowed little when, in 2009, he pleaded guilty to assaulting girlfriend Rihanna; his commercial clout remained, as his successive albums regularly topped the Billboard all-genre and R&B charts. F.A.M.E. (2011) also won a Grammy for Best R&B Album. ~ Andy Kellman