Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Flawless.The fourth wall falls.

From one of the few artists in history who never produced so much as one poor piece of work came this definitive moment of cinema. No other film has ever captured me in such a way, I quickly become afraid of what I will find in the "zone" and concern for the characters is secondary. "Stalker" is an experience, not a form of entertainment. Much like "Persona" it is very easy to forget that you are watching a film. All of Tarkovsky's films are of an unequalled beauty, Stalker is amongst his most beautiful. To call it "Science Fiction" is a grievous insult, this film is nothing less then poetry. There is no excuse for not having seen this, I feel very sorry for anyone whose preconceptions will not allow them to admire this film, they have been cheated as they maintain, but only by themselves.