Review: loses its sense of humor in a vat of failed jokes , twitchy acting , and general boorishness 
Sentiment: negative

Review: a good music documentary , probably one of the best since the last waltz 
Sentiment: positive

Review: real magic , 
Sentiment: positive

Review: finding the characters in slackers or their antics amusing , let alone funny 
Sentiment: positive


Review: you 'll cheer .