Free climber Kevin Jorgeson recently participated in an @Google Talk, to discuss "The Fun Scale".
From the YouTube description:
Kevin Jorgeson started climbing at age 12. He hasn't stopped since. Kevin is known for high level boulder problems and free climbs across the world, from California to New Hampshire to South Africa.
Jorgeson and his climbing partner Tommy Caldwell have been working for several seasons to free climb the Dawn Wall, the steepest, blankest part of El Capitan in Yosemite Valley.