Most Frightening Subliminal Suspense Horror Movies

Since quite a time several high quality movies were made, which frighten the audience by subliminal visual elements like shadows on the wall, spine-chilling noises, horrific dream sequences, strange behavior of the characters, or simply silent appearances of deceased people.

Which of these movies gave you the most goosebumps and coldest chills? (If you haven't watched any of them, which one are you most interested in?)

Discuss here.