Wayward Cloud springs to mind at once, as it's fresh in the memory. Tsai is a genuinely artful director (often too slow for some tastes) but here, while preserving his beautiful languorous longueurs, he launches into the territory not only of musical kitsch, but also of the provocative outrageous sexuality of Takashi Miike + Oshima's Ai no Corrida- which, taken with his usual minimal dialogue and visual imagination, add up to something new, astonishing and extraordinary. I'd be interested to hear other reactions, cos i'm inclined to think it's among the few genuine and original masterpieces of recent years. That's before it's had time to bed in.
Otherwise, do see Street of Crocodiles (Quay twins' Czech-influenced macabre animated short). I'm interested to see they've got a new feature length film out. Madhuban is much more an expert, but do delve into Czech surrealism generally; e.g i liked Valerie and her Week of Wonders, and Svankmajer part-animated films like Conspirators of Pleasure. Jodorowsky's Holy Mountain is worth a look though i think from his other films especially, he would seem to be more shallow than his fans would have us believe.
A must is the Russian animated masterpiece Tale of Tales (Norstein), voted greatest ever animation back in 1984 and with very good reason.
Or how about Paradjanov's Ashik Kerib?
Cocteau: Orphee trilogy