While I can appreciate 2001, and I have come to have more appreciation for it having watched a presentation on Stanley Kubrick and his specific goals and vision for it, clearly it's not the most exciting film thanks to its lack of pacing.
Actually, fun fact: much of Star Trek: The Motion Picture's styling comes from the influence 2001 still had at that time.
Not-So-Fun-Fact: ST:TMP really sucks. It, in fact, sucks so much that it can be used as a substitute for a residential vacuum cleaner.