Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent . . . if you're pathological

Stylistically perfect and visually gorgeous, this is also one of the most unremittingly sadistic and gruesome movies ever made. If you can watch this one over and over, as the writer from Portland, Maine, confesses, you really do need to seek professional help. (But in the meantime, don't stop watching it -- that might be the only thing keeping you from doing something horrible.)