No, it's not a large subgenre by any means, but oh, it has a special place in my heart. It's safe to say, then, that I'm peeing my pants with anticipation over Prometheus. (And because of general incontinence issues owing to age, but still. I am EXCITED.)
And before you get all "What, where's Alien?"...I think those films deserve their very own AMPF, so stay tuned, Aunt Demandy!