Instruct: Classify a review into positive or negative sentiment.
Query: A must see, if only for the fx

Sure, the plot is derivative and uneven in spots, but the visual effects used in Pitch Black are quite stunning in spots. There is above average acting from a cast full of new-comers, and the plot DOES have some twists and turns that should keep your eyes open, even late at night. Twohy has captured the "post-modern" technique (quick jumpshots, fluid-motion, color variations) quite well. A good omen for the future of "scinema."