With Grave Digger, about a dozen dirt bikers doing flips, supermans, tail flips, etc, and mulitple levels of all of these in the air at the same time in one location. Just freaking incredible, with AC/DC's "For Those About To Rock" running in the background.
Scopped the guys at http://carscoop.blogspot.com/2008/03/awesome-off-road-acrobatics-with-bikes.html by over a month!