Went on a field trip with my school to see Oxford University the last week of term (6 weeks ago). Not really that exciting until... the tour guide started talking about the Guilds the Uni has.
One is the assassin's Guild. Every week, they pick a target, and plot a way to kill them. Then, they actually do it.
She said one time they found where one of their lecturers lived, carved and painted a fridge made of polystyrene, and used a winch to raise it above his front door. When he opened his door, BAM, straight on the head with a lifesize fridge.
How cool is that!