His Credentials: Outside of doing music, acting, and hosting a daily radio show, he also serves as Chairman of TeenNick and heads up his own N'Credible Entertainment record label.
What Makes Him So Smooth: Why don't we ask Mariah Carey? (wink, wink!) Just kidding. He's smooth because he's managed to reinvent himself time and time again during his career. Not content with being known as "just a singer" or "just an actor," he's taken on a variety of different roles and he's now one of the hottest young execs in the game. Smooth, right?