one of the best i ever did back in college involved a door too.
you have to pull this on someone who has a roomate who will help you out.
go in the room and remove the hinge pins from the door, and carefully close it.
when the person gets back call their room right before they get to the door so they rush to open it....
the door will come off the hinges and slam to the floor with them on top of it!
now..run!!!!!
