The five weirdest science fiction films ever made

One of the best things about science fiction is it can be weird. Really, really weird. More often than not, it isn't weird, it's just spaceships and ray guns and robots, and that's all fine and dandy, but the genre's ability to go deep into the WTF zone is one of its great strengths. Sure, sometimes the results are more "Huh?" than "Wow!" but the effort is important all the same. Tonight at the Sie FilmCenter, the Sci-Fi Film Series from the Denver Film Society and the Denver Museum of Nature and Science kicks off with Upstream Color, a very weird science fiction film from Shane Carruth about a parasite that can control human behavior.

In honor of this strange launch to the series, it seemed a good time to look back at some other really, really weird sci-fi films. They're not all great -- not by a long shot -- but they're all damn strange, and worth a look if only for the one of a kind conversation starter "I saw the most bizarre film the other day..." they provide.

See also: Join the cult of Altered States