He may be "dangerous," but Nate "Danjahandz" Hills -- or just plain "Danja" -- is "a huge talent," according to none other than Madonna. A self-proclaimed "big fan of his work," Madonna tapped him for her hit "4 Minutes," featuring Justin Timberlake. But she's just the latest in a long line of big-name production clients -- also including Timberlake, Nelly Furtado, Sean "Diddy" Combs, Snoop Dogg, Katherine McPhee, Duran Duran, Britney Spears and Jennifer Lopez -- that have made this Timbaland's protege the go-to guy on a wide range of recording projects.