Too many good ones to choose from. Off the top of my head...

Unforgiven
Conan the Barbarian (original)
Predator
Aliens (note plurality)
Dazed and Confused

Some of my other pics....
Shawshank Redemption
Pulp Fiction
Alien
Goodfellas
Casino
Midsommar
Friday the 13th part 2 - 4
Dirty Harry
Raiders of the Lost Ark
Mandy
and lots more....

For those that haven't seen them yet, both Midsommar & Mandy are real trips. I just saw Midsommar for the first time last week. Had zero expectations going in, but it's messed up in a really great way.
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“If the military were fighting for our freedom, they would be storming Capitol Hill”. – FleaFlickr02