The American Film Institute has named its Top Ten Greatest Films of All Time in various categories.
Pleasingly, science fiction got its own list. And here they are.
10. Back To The Future (1985)
Certainly a worthy entry. Successful in bringing time-travel stories way into the mainstream, and still plays well two decades on.
9. Invasion Of The Body Snatchers (1956)
Inspired by the looming threat of communism and still pretty creepy. Philip Kaufman's 1978 remake is arguably better, although last year's remake The Invasion was unquestionably worse.
8. Terminator 2: Judgment Day (1991)
No argument here. A quantum leap in science fiction movies, action movies and special effects wizardry. Still looks better than most of the imitators that came after it, including Terminator 3.
7. Alien (1979)
Again, no argument about this one. The perfect blend of horror and science fiction and some of best art design ever seen anywhere.
6. Blade Runner (1982)
Many fans would put this at number one, but I'd argue that it's not really worthy of a spot here at all. Intriguing story and ground-breaking in its time, but it hasn't aged well. Top twenty, maybe.
5. The Day The Earth Stood Still (1951)
Classic anti-nuclear movie that still resonates today. It'll be interesting to see if the impending remake (starring Keanu, of all people) manages to live up to it. I suspect it won't.
4. A Clockwork Orange (1971)
I love this movie deeply, although I'm not too sure about its classification as science fiction. What the hell. I'll take it.
3. E.T. The Extraterrestrial (1982)
Oh, bugger off.
2. Star Wars: Episode IV - A New Hope (1977)
Predictable entry. Two problems. First, it can be argued that this is fantasy, not science fiction. Space is just a little too noisy in this far-away galaxy. Second, Empire is a much better film.
1. 2001: A Space Odyssey (1968)
Well, of course. This movie doesn't just show you space. It makes you feel it.
So not a bad list overall. I would have included Forbidden Planet and maybe Things to Come. Some more recent flicks like Twelve Monkeys and Donnie Darko might also be worth considering.
But hey, I'm only a fan. What do I know?