There are many great predictions hinting to future (it is from 1968 - can you believe it?) innovations throughout the movie. I might not have found all them because I keep falling asleep while watching it but I will keep trying to find them all.
I believe that we should call it a modernism show, albeit exhibited in the form of a movie. While it might feel "boring", it forces you to rethink what philosophical level that a two-hour film can achieve. The focus on questions about life, intelligence, and time, is worth more attention than the sci-fi part (though the special effect of this movie is already way ahead of its time).