Every once in a while on this pingpong table called life, we come across an entity so loathsome it warrants coming back from that righteous perch (heaven) or that lovely fluffy place (I.E., the couch) in order to deliver justice or wreak *unlimited* vengeance upon said aggressor. *I needed to make a subliminal at&t plug*

Thusly: If you were to expire at this time, and subsequently returned as a ghost (or undead creature, respectively), which people/companies would you choose to haunt thereafter?
Sure, you could choose the namby-pamby die-and-go-in-peace route, but where's the fun in that?

Your honest answers here, please