Review: the problem with `` xxx '' is that its own action is n't very effective . 
Sentiment: negative

Review: perfect use in the breathtakingly beautiful outer-space documentary space station 3d 
Sentiment: positive

Review: is that it is one that allows him to churn out one mediocre movie after another 
Sentiment: negative

Review: the film is way too full of itself ; 
Sentiment: negative


Review: richard pryor mined his personal horrors and came up with a treasure chest of material , but lawrence gives us mostly fool 's gold .