P1, The deaths of Mac and Dillon. Loved the build up and atmosphere of this scene. Easily the Predator at its most frightening.
P2, The subway scene. Paxton completes the trifecta. He has now been killed by The Terminator, Alien and Predator.
Predators, BSP gets beheaded. Next to Anytime, my fav Pred death. So unexpectedly brutal.
AvP R, The nuke drop. Because the movie ended.
Honorable mentions go to Arnie's final fight and Harrigan's duel in the ship.