In my opinion these are the best:
THE SHINING (1980)
THE EXORCIST (1973)
THE SILENCE OF THE LAMBS (1991)
JAWS (1975)
CARRIE (1976)
THE OMEN (1976)
PSYCHO (1960)
ROSEMARY'S BABY (1968)
POLTERGEIST (1982)
not in order. And I would include SIXTH SENSE!!!
THE RING (2002)
I have a comment about this. I saw it on video at home, not cinema so I can't tell how it would be at cinema, but I found it good. Though no among "the best". However, I remember when the scene guy was alone at his appartment, he was watching the video so we knew he was about to die, then we were waiting for the phone to ring.. and you know what happened??
MY PHONE AT MY BEDROOM STARTED TO RING!! Now THAT was really scary. I almost got a heart attack, I jumped from bed reeeeally scared!!!
And these two were good but more comedies than scary
A NIGHTMARE ON ELM STREET (1984)
AN AMERICAN WEREWOLF IN LONDON (1981)