Does anybody remember Silent Running?
A good newer film I've seen recently is "Immotel (ad vitam)" http://www.imdb.com/title/tt0314063/ made by french comic artist Enki Bilal. I wholeheartly agree with the critics that the CG characters sucked big time, but there's so much more in this movie, a beautiful mood of urban decay, bizarre imagery, a totally unique artistic vision. And the movie doesn't insult the intelligence and the imagination of the audience by explainnig everything A - Z.
-i-