That mid-Almodovar peak was incredible, now that you mention it. My personal favorite from that time has to be Habla Con Ella (Talk To Her), in parallel Woody Allen filmography terms I would equate it with Hannah & Her Sisters, in artistic achievement.
Barry Lyndon is currently a rising "underrated masterpiece" topic with most of the best film critic podcasters. My personal favorite film has nearly always been 2001: A Space Odyssey, but I just recently rewatched Barry Lyndon and man... in any other filmography this would have stood alone at the top.
And we still have the rest of Kubrick's work to contend with... Dr. Strangelove, The Shining, Paths Of Glory, Eyes Wide Shut... it's just ridiculous.
For a long time now, I've regarded two people as my artistic heroes of the 20th century: Stanley Kubrick and John Coltrane. Mark Rothko could be up there, too, I cannot imagine my day-to-day life without his work to stop and look at, or to simply have as a presence in my surroundings.