I must say, I had an interesting reaction to 2001: A Space Odyssey, which I saw the day after it opened at the Pacifics (formerly the Warner Cinerama) on Hollywood Blvd. I walked out of the theater thinking this is either the biggest piece of crap ever made or it's a great film. For a few years I went with the latter and I saw the film several times. I was happy to see it before all the hype and the druggies adopted it as their own.
So, interestingly, for me the film hasn't worn that well, and I find it almost impossible to sit through now. That's why hearing the North score and synching it with the early sequences of the film is so interesting - it's much more movie-like.