Ah, here is one I'd forgotten; EA's marketing for Dante's Inferno, which included hiring fake "Christian protesters" to pretend to hold a fake protest against the game at E3, and encouraging gamers to "commit acts of lust" by taking photos of themselves with EA's "booth babes", with the winner getting an awkward fake date with two models.
Understandably, this did not go down well at all and it boggles the mind how such bad ideas were ever approved.
At least it is creative.
Well, so's jumping out of a low flying plane into a sewerage treatment pond while dressed as Captain Planet, doesn't mean it's a good idea. :P