http://www.ebaumsworld.com/bikewallsmash.html I wouldn't recommend trying this one at home or you'll end up like this kid.....I found this rather disturbing

I thought I'd share this for the sake of the people out there that don't understand the laws of physics and the probability of him being able to do a backflip with his bike on that wall. Even more terrifying, he wasn't even wearing a helmet....he's lucky hes alive right now

Sorry, you've been beaten on this one ;) http://www.bikeforums.net/showthread.php?t=80288

Ah oh well can't win em all :p