IN no particular order:
The Empire Strikes Back, naturally
Planet Of The Apes (1968 of course)
The Treasure Of Sierre Madre
Casablanca
The Maltese Falcon
Raiders Of The Lost Ark
The Terminator
T2
Jaws
Predator
The Thing
Deep Blue Sea
The Truman Show
Point Break
The Breakfast Club (Don't You Forget About Me)
12 Monkeys
2001 A Space Odyssey
Ghost Story (from the Straub novel)
What Lies Beneath (yeah it rips off Ghost Story but it's still a good ending)
Arlington Road
Boondock Saints
The Blues Brothers
An American Werewolf In London
Poltergeist
The Chronicles Of Riddick
Die Hard
The Game
The Matrix
Wild Things
Primal Fear
Reservoir Dogs
Citizen Kane
Bicentennial Man (oh I get all weepy)
First Blood
Every Rocky Film
One Flew Over the Cuckoo's Nest
The Shining (Kubrick)
to name but a few.