Jimm McShane created a great series of minimalist posters inspired by popular horror movies for HalloweenCostumes.com (previously). He covered everything from the classic film Carrie to more modern horror films, such as Saw. The full collection of minimalist horror movie posters can be viewed online.
The Ring (2002)
The Shining (1980)
American Psycho (2000)
images via Halloween Costumes Blog