Here's a guy, Dennis Rogers, bending the shit out of an adjustable wrench.  I have several similar ones in my basement, so you KNOW I tried it =)  Check him out at www.dennisrogers.net.  Also, big thanks to Brian Brushwood at Scamschool for featuring the guy in a few of his podcasts.  FYI, even though the podcast is scamschool, where the Schwood teaches how to scam, the point of those few shows was to demonstrate how to cheat at what Dennis does, which is very, very real.