Ryan Seacrest hosts the 15th annual gala honoring artists and songs with the most sales and airplay. Slated performers include Usher, Nelly, Green Day, Evanescence, Gwen Stefani, Keith Urban and Sheryl Crow. Stevie Wonder receives the Century Award and is saluted with an all-star tribute. Also set to appear: cast members from “Mad TV” (who offer impersonations of music stars); Chingy; Alicia Keys; Ashlee Simpson; Fantasia; Nick Lachey; and Duran Duran.
