A few titles that I was pleasantly surprised by lately that should still be streaming:

Beyond the Lights
An Honest Liar
Bring me the Head of the Machine Gun Woman
Conan the Barbarian (finally saw it)
Garfunkel and Oates
The Island of Dr. Moreau (original)
Zombeavers

Tucker & Dale vs. evil has been streaming forever, but yeah that one is fantastic.

All great for completely different reasons.

Which version of Let the right one in? They were both around for a while I think. Remember anything else about it? Sounds like it was probably a horror/suspense type thriller? Sci-fi or no? Children involved? Setting? Maybe Honeymoon? It Follows? The One I Love? Almost Human? It Follows was quite good. As was The One I Love. Different ends of the thriller category though.

Also, some other great ones that I just checked and are still up:

Sushi Girl. The less I say, the better. It's fantastic.
Honeymoon was an fresh thriller, not sure if that's what you're referring to.
Oculus was also incredible. Really reminded me of House of Leaves or a really good Lovecraft story.
Danger 5.
Welcome to the Jungle. Quite funny.

There are a few versions of Metropolis floating around on streaming, at one point they had the "original" pre-2010 rediscovery rerelease as well as the extended version and one or two different versions of the score.

The first time I ever saw Nosferatu, I was listening to Antics by Interpol on a loop and the film and alboum are forever linked in my head. Still hear the lyrics running in the background when I watch it. Kind of weird, but it works.

The Cabinet of Dr. Caligari is also available streaming and definitely worth a watch if you enjoy 20s films.

Skip the first episode until you've watched the rest.

Anyone else streaming on Amazon Prime? I've been really impressed with the massive library of schlocky exploitation fare they've accumulated just recently. Troma titles I've never heard of before, regional underground releases, and more terribad 80s Euro knockoffs and weird zombie movies than you can shake a stick at. All kinds of good stuff.