President, CBS Interactive (CBS)
Age: 35
CBS CEO Les Moonves last year tapped Smith, a Silicon Valley veteran, to head the company's digital arm and help navigate the media minefield online. Smith's dealmaking frenzy has included everything from the $280 million buy of Internet radio startup Last.fm to sassy stocks video blog Wallstrip. But his biggest coup may be plans for an "Interactive Audience Network," which aims to syndicate CBS TV shows to every corner of the Net. Age: 35
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