I totally forgot about Housr on Haunted Hill. That was definitely freakier than I was expecting.I enjoyed the Ring but it didn't scare me because I don't watch VHS any more.
House on Haunted Hill (late 90s version) scared the crap out of me.
And of course there's the Exorcist. To this day that movie makes me scared.
The Shining. You have an uneasy feeling that whole movie.