... The Aristocrats!
Would love to see this in 3D sometime, William C. Menzies' visual style is a natural for the format, and even watched flat his strikingly deep compositions and production design make a strong, atmospheric impression - my favorite part is when Kitty and Edith first show up at Craven Castle and their cab driver takes off without helping with their luggage, and Kitty asks "what's there to be frightened of?" while a thick, creepy fog and a gnarled, impossibly twisted tree behind her answer that question to the point of absurdity.
It's extremely late, so I am going to go to sleep and dream of Tobe Hooper remaking this instead of Invaders From Mars.