In your opinion what makes a good horror movie?

[LadyTass2001]

Well I haven't ever seen this on any other board so here goes.
What in your opinion makes a good Horror show? Is it the creepy music? The main character? the gore and violence or is it the psychological terror?
In my opinion it is the combination of all of the above,plus don't forget the way the main character kills his/hers victims.

[jabberwocky]

what make s good scary movie is psychological terror, the stuff you don't see that plays with your imagination.