now the problem is figuring out who only put in $5.
dave, now that we know what happened, could you source out a dmc delorian and design a flux capacitor so we can travel back in time to see who it was? the stainless steel construction of the delorian helps with time travel.
oh, and for fuel make sure you use a mr. fusion rather than actual plutonium. plutonium might be available at any drug store in 1985 but here in 2010 it's a little hard to come by. unless you can find a group of libyan nationalists that want you to build them a bomb.