Though Predator is one of the most slip - up laden movies, next to commando, one of my favorite slip - ups in the movie is just after Blaine (Jesse Ventura) is blasted by the Predator. Mac comes running up and empties his machine gun at the cloaked Predator. He then proceeds to pick up Blaine's mini gun and fire into the forest. Pay attention to the shot when Mac is firing into the forest and you are behind him. The bullet squibbs are placed all over the right half of the forest but Mac is firing to the left, thus demonstrating a new kind of ammo... the CURVE BALL BULLETS!