Utterly evil person. If I could travel invisibly and come and go as a ghost and do the angle of death thing, he'd be pretty high up on my list to visit asap. Sometimes I fantasize and also have dreams being able to do just that and visit someone, scare the absolute shit out of them and give them one chance to change or fix what they've done. Sometimes I just say fuck it and give them a heart attack or stroke and walk away.
But if I could do that at will, for grins I'd probably swing by the Dallas Cowboys locker room to kill some time.