The parachute pic -- what a rush!
Similar to sand-bagging when bungie jumping -- basically, one person is attached to the bundie chords, and wraps his arms around an unteathered person infront of him. When they reach the full extention of the bungie, which is typically a few feet over a river, the first person lets to of the second person. The reduction in weight will typically send him above the bridge/structure he jumped from.
I've never done anything like that, but man, if you can pull off stunts like that, you must feel invincible. If you can't pull it off, well, there is no second attempt.
-Z.