Chairman, IAC, 70
With the merger of The Daily Beast and Newsweek, he added even more media properties to his InterActiveCorp's stable -- which includes Match.com, CollegeHumor, Vimeo -- but Diller's still making waves with Aereo, a service that transmits broadcast TV to web users. The new venture has been controversial, but that's what billionaire Diller -- who's married to fashion designer Diane von Furstenberg -- does best.

















