The Return of Count Yorga. My mum took me and a friend to see it for my twelfth birthday. It gave me cold sweats for months.
The Omen (1976), The Shining (1980), The Evil Dead (1981), The Exorcist (1973) and The Exorcism of Emily Rose (2005) really scared me.
Which 'Ring' do you mean exactly? Ring 1 or 2 or both? I have watched both and think 2 is more scary than 1.
Well Insidious and The conjuring were quite scary for me,because i was watching it alone. Insidious 2 were not so good as the first part.