Review: a film really has to be exceptional to justify a three hour running time , and this is n't . 
Sentiment: negative

Review: an energizing , intoxicating documentary charting the rise of hip-hop culture in general and the art of scratching ( or turntablism ) in particular . 
Sentiment: positive

Review: wo n't be disappointed 
Sentiment: positive

Review: so real 
Sentiment: positive


Review: the efforts of its star , kline , to lend some dignity to a dumb story are for naught .