I agree with all James t kirk had to say, its such a beautiful, fascinating movie.
I think it all depends on your perspective before watching though, and how much you know.
I knew little when I first watched it two years ago in my science fiction and fantasy course. It was tough to follow on that tiny tv with 30-40 kids trying to watch, and distracting noise. But even after that, I thought it was cool.
I continued my research on the story after, and found it to be more and more interesting with each bit of info I could grab. By the end of that course I had to write a paper on it. Really immersing myself in the story helped.
They came out with the collector's edition recently, which I had to get.

All three versions and a bonus disc.
It really is one of the best films ever made. I think people expect too much from their movies now...all flash and show, no mystery or depth.