And for the record, I actually *don't* do drugs, though I'm sure if you do, it'll take it to a whole new level.
2001 is more than a film. It's a moving ("moving" as in "kinetic," not "tugging at the heart-strings") piece of brilliant, hi-concept art. The sequel is a great sci-fi flick and gripping story, but nothing more. The original is just something greater. Swan Lake on celluloid.