Movies you found to be incomprehensible?

^ This. Definitely needs multiple viewings and even then parts will still be dark. I have seen it three times and each time what you realize from that viewing will build on what you learn the next time. Winner of two major awards at Sundance, The Independent Spirit Award gave it Best Feature and Director plus two other nominations.  So even with seeing it just once, its brilliance, bordering on genius, shines through and compels more study. Famously, writer/director/star Shane Carruth spent only about $7000 by renting all his equipment and shooting at his parent's house and public locations around his home in the north Dallas area and carefully rehearsing so only one take would be necessary. (The scene set at public computer terminals at a public library was made at my own workplace at the time.) But, as he later said, "The $7000 was the cash but not the COST." All of his actors and technical help worked for free, hoping for a payoff that they had to wait two years for.