CEO, AdobeRank: 15Why he matters: Chizen isn't a flashy guy. Sure, his company made Photoshop a household word and helped bring Internet video into the mainstream, but the Brooklyn native, who never lost his tough-talking accent, is positioning Adobe's PDF and Flash technologies at the center of the online content revolution.
And he's been so successful that Adobe now finds itself in Microsoft's crosshairs. Is Chizen worried? Fugghetaboutit. In fact, he's launching Adobe's most ambitious project yet: a platform called Apollo that helps Web developers build desktop software to engage customers even when they're not online. Take that, Steve Ballmer.
Meet 50 Who Matter winner Gina Bianchini. Her site, Ning, lets anyone be a social networking mogul. (more) 
