Only now rewatched it after many years of not having seen it, wow, it looked amazing to me, I guess seeing the detail is far more important in such a film where the camera just lingers and lingers. The film has aged surprisingly well, and the thought that went into the "future" technology really shows, most of it made sense, not much was horribly out of place, I think there was one part where they were watching a broadcast on tablets even. Reading the wikipedia http://en.wikipedia.org/wiki/2001:_A...sey_%28film%29
on it you can see all the chances for this film to have gone wrong, if kubric had gone with more blatant references to politics of the day,nuclear weapons, the soviets and the rest it would have aged the film horribly, or if he had gone with more dialog.
The in camera effects shots look amazing, no cg to say the least.
I also watched the 2010 sequel recently as well, which sadly doesn't hold up, crts everywhere, and awful aging of the story because of the tacky soviet stuff and world peace bs. A film from 1968 beats a film from 1984 in staying relevant...go figure.