not strictly a death, oblivion: shivering isles, in the adventurer trap place. You get these adventurers in a room with a massive pile of gold behind a caged door, with a key on the floor, just as they near the key you drop hundres of similar looking keys on top of it, one of them starts screaming hysterically and seraching thro every last 1. Even thought there all fake =P
same bit, a few rooms later, a guy walks into a room full of corpses, and you make them all reanimate and kill him. Its wrthwhile just for the surprise on the guys face.
Assassins creed, when you steal one of the elite guards axes and swing it upwards into an enemies crotch so hard you cant remove the axe, more funny than nything.
hmmmm
think thts it =P