What is your favorite horror movie and why?

Boring thread, I know, but I think it makes sense to make it today.

You don't have to say why if you don't feel like it.

Mine is Dawn of the Dead (1978) because it's very entertaining, it has great likeable characters, it has some of the most memorable zombies of all time, it has a lot of great gore and the music is awesome. Also it offers everything you could possibly want from a movie: horror obviously, suspense, action, drama, comedy and even romance. I could watch it everyday and never get tired of it. Not only my favorite horror movie, also my favorite movie of any genre. 10/10