She's "alright" with wars, hates the horror/bloody slimy stuff, loves the drama stuff.
Didn't really enjoy any of the aliens, like Star Wars (though didn't like any of the prequels), liked Red Planet, got bored with Blade Runner, has watched a couple of the modern Star Treks (loved the last one which I refused to watch).
So, things that came to my mind:
Wrath of Khan
And then I kinda drew a blank. What are some good, classic, nerd introducing SciFi movies (sorry, movies, not books... I'm working on her to read "Dune" but her mother(!) is reading my copy right now. Then again, she is in the middle of the second Hitchikers book...). Oh, and she liked the Hitchikers movie, too.