You knew him as the Fresh Prince. You knew him as one of the Men in Black. And, last Valentine's Day, you simply knew him as Hitch. Now, Will Smith is returning to his hip-hop roots as "Frosty the Showman" for a big to-do on Dec. 7 sponsored by Q100. And his ol' DJ, the amazing Jazzy Jeff, is backing him up. If Mr. Willennium isn't enough entertainment for you, opening acts include the Backstreet Boys, the Pussycat Dolls, Relient K, and Marcos Hernandez. Even Rihanna, author of the summertime faux dancehall hit "Pon de Replay," will be on hand to present a pre-concert performance. $35-$55. 7 p.m. Philips Arena, 1 Philips Drive. 404-878-8000. www.philipsarena.com.