Bloody hell, I only chucked my old one out a couple of years ago, Silverfox thing with Skyway mags. Spent a fortune on it as a kid.
I still have the battered shinbones from the beartraps though, evil fuckers they were

Biggest leap ever made was over a half built house, it was almost up to 1st floor level. *Massive* run up, huge ramp. Unfortunately my feet slipped off the pedals half way over, the back wheel twatted the edge of the landing ramp and accelerated upwards at a massive rate of knots, the seat of course contacted rather 'sharply' with the first things in it's way upwards, my nuts

Cue hospital trip and a large syringe & needle to drain off the 'swelling'

You know, that actually hurts to remember