Review: tries-so-hard-to-be-cool `` clockstoppers 
Sentiment: negative

Review: is a good-hearted ensemble comedy with a variety of quirky characters and an engaging story . 
Sentiment: positive

Review: is n't very effective 
Sentiment: negative

Review: like every other tale of a totalitarian tomorrow 
Sentiment: negative


Review: is a shrewd and effective film from a director who understands how to create and sustain a mood .