I wouldn't consider myself much of a mountain biker ( I decend like an awkward baby giraffe might), but I recently found a video of some downhill guys doing some really incredible riding while perusing Hipster Nascar. These guys have some truly incredible bike handling, and definitely some serious needs for adrenaline. The video gives some great views of both the technical side of downhill, and some of the plain crazy side of the sport. watch it here: http://vimeo.com/15448170