I made it all the way through the brilliant but taxing surrealist Soviet SF movie Stalker by Andrei Tarkovsky (who did the original Solaris flick) the other night. It really is difficult to stay awake during this movie, not because it is dull (it's quite interesting) but because it is incredibly slowly paced with very powerful cinematography that makes it quite hypnotic. It concerns an area in the Soviet Union called "The Zone" which has been cordoned off by the authorities because it is both very dangerous and potentially threatening to the powers that be. Something unexplained happened there that changed the laws of physic/reality, it may have been a meteor crash or even a UFO. There is a heavy implication it may have been some sort of nuclear disaster, and as the wikipedia entry mentions, after Chernobyl, the locals took to calling that site "The Zone" in honor of the movie (and they call the rangers who work there "Stalkers" too, just like the "guide" in the movie.) This was the most existential science fiction I have ever seen, except for maybe Alphaville. Recommended for sure, but have some strong tea on hand!