Nick Cannon & Mariah Carey Host TeenNick Halo Awards Screening - Arrivals

WASHINGTON - DECEMBER 09: Chris Singleton, ESPN's Baseball Tonight analyst (L) and Darrius Snow, a HALO Award Honoree, arrive at a screening hosted by Nickelodeon, along with TeenNick Chairman, Nick Cannon, and Grammy Award-winning recording artist, Mariah Carey, of the TeenNick HALO Awards at the Newseum on December 9, 2009 in Washington, DC. The TeenNick HALO Awards premieres Friday, Dec. 11, at 8 p.m. (ET), on TeenNick, followed by an encore presentation at 9 p.m. (ET/PT) on Nick at Nite. (Photo by Brendan Hoffman/Getty Images for Nickelodeon)