OK, not the best films. Not the best written. Not the best performances. Just to look at. What's the best?
My suggestions:
Dark City. You ever wondered what Batman: The Animated Series would have looked like live action? Essentially this.
Blade Runner
The Cabinet of Dr. Caligari
Metropolis
Marie Antoinette (the only good Sofia Coppola film, IMO)
Sleepy Hollow
Batman Returns