Ryan Sheckler

WILLIAM WEST/AFP/Getty Images

Ryan Sheckler

Power 100 rank: 100
Sport: Extreme
Age: 21
Most recent notable achievement: 2008 X Games, 1st Place
Earnings: NA
Key sponsors: Oakley Eyewear, Red Bull, Panasonic

Why he's on the list: Now that Tony Hawk has retired, Sheckler may be the most prominent skateboarder on the planet. He turned pro in 2003 at the age of 14 after winning the X Games, Gravity Games, Vans Triple Crown, and Slam City Jam. He is currently the star of his own MTV reality show, The Life of Ryan, and with J.C. Penney has launched a clothing line, RS By Sheckler.

(This caption has been updated to amend the name of Sheckler's clothing line.)