Definitely 'Terminator'. The idea of time - traveling cyborgs is a classic science - fiction trope. It has that gritty, high - stakes feel that makes it so popular. For supernatural - science - fiction mix, 'Stranger Things' is a great example. It has a parallel dimension called the Upside Down that is full of strange and dangerous creatures. It combines 80s nostalgia, science - fiction ideas of alternate dimensions with supernatural elements like telekinesis and psychic powers.
Some of the most popular ones are 'Star Wars'. It created a vast universe full of different species, spaceships, and the Force, which is a supernatural element. Another is 'The Matrix'. It combines science fiction concepts like artificial intelligence taking over the world with the idea of humans living in a simulated reality, which has a sort of supernatural feel to it. And 'Harry Potter' is also very popular. It's filled with magic, wizards, and magical creatures, which are all supernatural elements in a fictional world.
Well, 'Avatar' is a big one. It has a science - fiction setting on an alien planet with unique creatures and a different ecosystem. The connection between the Na'vi and their world has a touch of the supernatural. 'Blade Runner' is also a classic. It deals with replicants, which are artificial humans, a science - fiction concept, and has a noir - like atmosphere that gives it an almost otherworldly or supernatural quality. 'Lord of the Rings' is popular too. It has magic rings, wizards like Gandalf, and all kinds of mythical creatures, making it a great example of supernatural in a fictional world.