Most "Haunting" Movies You've Seen?

When I write "haunting," I mean the movies that stick in your mind and/or get under your skin in an indelible way. Here are some of mine: - Beautiful Boy - The Sixth Sense - Boogie Nights - Vanilla Sky - Magnolia - World's Greatest Dad - Heathers - Basketball Diaries - Buffalo 66 - Cheap Thrills - Hard Candy - Santa Sangre