Co-founder, Google
Age: 38
Industry: Technology
After sharing responsibility for Google's day-to-day operations for 10 years, Brin and Larry Page are officially decoupled -- on this list and at the Googleplex. With Page running the show, Google's other golden boy now devotes his time to special projects, many of them in stealth mode.
Cutting loose: Billionaire Brin is apparently having some fun too. His Google page shows newly uploaded photos of himself skydiving and scuba diving in Egypt's Red Sea. He has also invested $5 million in a Virginia-based space tourism company and is waiting for his private ride into space.
NEXT: Kevin Plank
