I'll try to add a few here. Let me first say I can't believe someone mentioned Day of the Triffids, I have it on tape. Thought I was one of very few who saw it.
LIST:
Prince of Darkness, Carpenter film, great score.
Halloween I..after seeing it at the hteater, My friend and I actually looked in the back seat of my car.
Halloween II was good.
Friday the 13th...first movie
The Thing...Carpenter's remake
Zombie...creepy and gory, the eyeball scene is worth renting it
House of Usher...original with Vincent Price
Motel Hell..it takes all kinds of critters to make Farmer Vincent's fritters
Food of the Gods I
That's all I can think of right now, will add more if I remember titles.