I don't know about Pastrana footage, but look in BigLou's sig line for footage on "Air Nikki" and "Air Jenny". When we were at Dirtweek, Timr hooked up helmet cams to the fast woods guys during the Harescramble (MXBundy, Mick, etc) and we're awaiting the footage.
Here's a quick trailer for the video for the Texas Cross Country Racing Assoc. in North Texas. It's a huge organization with about 600-700 racers per race and over 1500 members. www.tccra.org/video/tccra2003trailer.mpg