Monty Haul GM
A variation on the Munchkin GM, but characters tend to be lower level - "You are each granted one wish."
"I wish to have the hand and eye of Vecna."
"I wish to have the flask of Teurny the Merciless."
"I wish to have..."
"Poof, they appear in front of you. Now what do you do?"
(This actually happened, years ago, when we first started playing.)