Some of my favorite horror movies:
The Exorcist: Didn't scare me, but it's an incredible piece of cinema in terms of story and acting.
The Shining: Was a bit more frightening but I still enjoyed it more for its visuals and buildup rather than the actual thrills.
The Silence of the Lambs: The characters are fantastic in this one, especially Hannibal Lecter. Not particularly frightening but did have some nice surprises.
The Thing: Awesome. Not even scary, just awesome.
Se7en: Terrifying in retrospect, not so much during the actual viewing. Haunting.
The Exorcist: Didn't scare me, but it's an incredible piece of cinema in terms of story and acting.
The Shining: Was a bit more frightening but I still enjoyed it more for its visuals and buildup rather than the actual thrills.
The Silence of the Lambs: The characters are fantastic in this one, especially Hannibal Lecter. Not particularly frightening but did have some nice surprises.
The Thing: Awesome. Not even scary, just awesome.
Se7en: Terrifying in retrospect, not so much during the actual viewing. Haunting.
horror movies are movies which fall in the genre: horror thriller, and not mystery thriller