Now that both Ellen DeGeneres and Simon Cowell are leaving American Idol, rumors abound over who's going to be the next arbiter of taste on the Fox show. J Lo's supposedly signed a deal. Allegedly, Steven Tyler's been asked to join the show. P Diddy's thrown his hat into the ring. Elton John, Jessica Simpson, Howard Stern, Justin Timberlake–it seems like everyone's vying for a spot beside Randy Jackson.
5. Stevie Wonder