25. Bonin Bough
Bonin Bough
Senior global director of digital and social media, PepsiCo
Age: 33
Industry: Consumer Products

If the self-described nerd hadn't started freelancing as a programmer after college to make extra cash, Bough would have ended up with a master's in political philosophy. Instead, he spent nearly a decade building web strategies for Fortune 500 companies at outside agencies. Three years ago he jumped to PepsiCo, where he runs the team that focuses on digital and social media.

Best advice: Mentor as much as you can. "I'll speak at an event, and there will be a line afterward, and I make sure I talk to every single person. That's where you learn. That's where you get the best idea."

Last updated October 25 2011: 5:11 PM ET