This is a video of the Red Bull Rampage competition that was held in Virgin, Utah for three years in a row, I think from 2002-2004. The event was held again in October of 2008. The goal of this competition is to get down the mountain the most difficult way without wrecking or putting a foot down. This stuff is sick!
Amazing pictures from Switzerland show where "jetman" Yves Rossy gave this incredible flying display, using a tailor-made jet pack. The aviation enthusiast leapt from a helicopter and performed a series of aerial acrobatics above the Alps. He then joined two jet planes in a synchronized flight. To synchronise their flight paths the jets reduced their speed to 220 kilometres per hour (137 miles per hour), which put their engines at a point close to stalling. Rossy's previous aerial feats include flying the English Channel and looping the loop around a hot-air balloon.