Guy that get cut in half by the elevator doors in that one movie

Guy that gets cut in half by door in Cube

Guy that gets head burned in with acid in Cube

Of course the guy that gets cut in tiny pieces by that wire thing in Cube

When guy one's head splits open and bites the head of guy two, then guy one shakes guy two around for like 5 minutes by his head and then throws him in to a wall. Thats from The Thing.

When Bishop gets riped in half by the Alien Queen in Aliens.

When the first girl gets killed in Black Christmas(with the plastic bag).

When Ripley kills the Queens/her child in Alien Resurection, by having slowly sucked out a tiny hole in a window.

When Her brother returns and pulls her out the door in Night of the Living Dead

Of course when the parents are killed by their daughter in Night of the Living Dead.