PREDATOR is one of those genre mash up movies. I love that it starts out as this mercenaries for hire war movie and then all of a sudden this creature shows up and starts killing shit. Classic.
Also here's a little (un)known fact. The Muscles from Brussels himself, JCVD played the Predator for something like 9 days. He left production because he couldn't do the helicopter kick. Just kidding.
Oh man, imagine if Arnold yells. "GET TO THE CHOPPA!" Then Van Damme (in the Predator suit) repeats saying, CHOPPA, and then does the helicopter kick to his face! Boom. Credits.