Predator
Predator 2
Forbidden Planet
The Thing (BOTH versions)
Andromeda Strain
Colossus: The Forbin Project
All Quatermass movies
Them!
Creature from the Black Lagoon
Invasion of the Body Snatchers (ORIGINAL ONLY!)
Tremors
Alien
Aliens
This Island Earth
Day of the Triffids
Day the Earth Stood Still
Day the World Ended (early Corman)
King Kong(guess it would be called sci-fi)
Beast from 20,000 Fathoms
The Fly(ORIGINAL!!w/Vincent Price)
More as I think of them. :)
Just thought of another early Corman-Not of this Earth.