Repo Man is a kind of sci-fi-ish movie.

I second Primer. Also, 12 Monkeys isn’t bad.

I don’t like sci-fi books much, aside from Philip K. male reproductive organ. If you’re ever in a used book store and you find a volume of the Dangerous Visions anthologies, pick that up.

In one of them there’s a story about a guy who goes to a dimension (or maybe another planet) where some women are pretty much lobotomized and bred for milking. The traveler tries to **** one, but her woman's genitals is cavernous.

I think there was also one where Earth sent a rocket filled with semen in to space.

I’m not even joking.

Also, while it’s not really sci-fi stay away from bizarro fiction. It sounds appealing, but it’s always a lot of kind of kind of interesting elements that amount to nothing.