We showed you one way to how hack an ATM a couple of weeks ago (we noticed that video is no longer available for some reason), but here's a guy who had an even better way. Somehow, he got his hands on a secret code that tricked an ATM into handing him free money. The override code made the machine think it was full of five dollar bills when it was actually full of twenties. The guy used an untraceable pre-paid debit card and for every $250 he withdrew, he was actually getting his hands on $1000.
A footnote to the story: this ATM was handing out four times the amount people requested for nine days before one honest woman fessed up, admitting she had received more money than she should have. What would you do? (Thanks, Jaan!)