It's sometimes true that the most demanding movies can yield the most lasting rewards, and the penultimate film by the late Andrei Tarkovsky certainly puts the theory to the test. This was the first feature he directed outside the Soviet Union, and its protagonist is (like Tarkovsky himself was) a Russian artist exiled in Italy. But don't expect anything remotely plot-driven; like other Tarkovsky films it's a dense, challenging exploration of faith, madness and memory: beautiful, enigmatic, intellectual, and extremely slow moving. Many of the sequences are a labor to sit through, but the final shot, in which the director transplants a Russian cottage (complete with landscape) inside the massive walls of an ruined Gothic cathedral, is by itself compelling enough to erase the aftertaste of even the most tedious passages.