To me, Kubrick could never top his late 60's through mid 70's output. 2001 is nearly incomprehensible, but its tremendous success - built on acid-trippers - forced the industry to view sci-fi movies as more than simply cheap b-movies. Clockwork Orange is, probably, his most mainstream film. in terms of classic narrative flow and protagonist/antagonist dynamics. Lastly, Barry Lyndon brought Kubrick back to experimentation, this again with narrative, but with lighting as well. Yet, he did not achieve another success.
http://www.imdb.com/title/tt0072684/trivia
That said, I've never been a big fan of any of his movies, at least in a desert-island scenario.