Alien Verses Predator: Requiem.
Sort of forced into seeing it, we were supposed to be bowling but it was full, and AVP was the only film starting within the hour.
Left after about an hour, everyone I was with agreed it was utterly bollocks. Probably didn't help that none of us had seen anything more than 1 film from the Alien/Predator series. I imagine it is still shite even if you have the rest of the films.
I checked to see how it ended, and half an hour into the film I'd correctly guessed who'd survive.