Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a monument of dramatic intensity

it is really a shame that Traffic, while a very good film, received so much attention and this one, a far superior film, recieved so little. the direction, score, and editing define the best qualities of independent film and the performances, especially Ms Byrstyn and Mr Leto, are spellbinding. remember to breathe in the last fifteen minutes, i almost forgot. this film so brilliantly depicts the downward spiral of addiction that you wont be able to take your eyes off of it until the last credit rolls