I saw this yesterday also, after Robinson in ruins. A double bill of experimental art movies!
Uncle Boonmee is dying. He is visited by his sster in law and a nephew. They are staying at his home to help look after him. He shows them round his farm. Then one night at dinner his dead wife arrives as a ghost and his dead son arrives as a monkey-monster. They are benevolent and seem to be there to help ease him into the spirit world.
The film had some great moments. I particularly liked the visual representation of the visiting ghost-wife (double exposure floating in and out) and the monsters-son (black chewbaccas with red eyes). Also the beautiful sequence of stars inside the cave.
I fell asleep at some point during the middle and woke up about ten minutes later. In my semi-dream the dialogue was all in English and my brain began to interpret it to the nearest equivalent words. When I woke up and started reading the subtitles again it still made no more sense.
The main story had disappeared and there was a long unconnected vignette about a princess who meets a magical catfish by a waterfall and has sex with him in exchange for him making her young again ?!? Eventually it returned to the main story.
I haven’t clue what it was all about. On Imdb it say’s it’s about Boonmee recalling all his past lives, which I didn’t get at all! But it was an enjoyable film with a dream feel to it, full of beautiful images. It also had a slow meditative feel, reflective of this Buddhist strand of Thai culture.