Dean Potter has been pushing the limits in the climbing world for years. His free solos and speed ascents in Yosemite and Patagonia are unparalleled. In recent years he has got more into BASE jumping. Check out this video of him throwing himself off Switzerlands Eiger armed with a wingsuit and parachute. It is the longest BASE jump ever, covering some 9,000 vertical feet and nearly four miles. Potter spent two minutes and 50 seconds in flight. Human flight... what a dream!