Xenomorph cop. It's a Dirty Harry style movie except the lead is a xenomorph. The other characters are only vaguely aware that he's a xenomorph. Or how about

Xenomorph cop. It's a Dirty Harry style movie except the lead is a xenomorph. The other characters are only vaguely aware that he's a xenomorph. Or how about the movie Clue with the three endings except an infinite sequence of "or maybe it happened this way" sequences. I mean how else are we going to get a sequence where Darth Vader and Tim Curry reenact the "No I am your father" scene while Martin Mull dies in the background due to a heart attack.