James dropped out of Brigham Young University a month shy of graduation to start an Internet company in nearby Orem, Utah. Today his web analytics firm Omniture, which measures real-time Internet traffic and sells that data to blue-chip customers, has more than $300 million in revenue. James's stake, currently worth $19 million, is about to become more valuable: Adobe has announced it will acquire the company for $1.8 billion, a 45% premium.

Wheels: Audi R8 (he sold his Porsche 911 to his best childhood friend).

Family: James has five daughters, ages 3 to 12.

influential, interesting, 40 under 40 (2009),