Marketing gimmicks aside, pinning down the raw facts on Gnarls Barkley is easy. The group's origins can be traced to an afternoon in 2005 when producer Danger Mouse played a few tracks for soul singer/rapper Cee-Lo. The former Goodie Mob member was impressed with the producer's tracks and suggested that the Athens, Ga. native submit tracks for Cee-Lo's new album. Danger Mouse -- whose production credits include Gorillaz and last year's Danger Doom -- replied matter-of-factly that he...  [+]