cement be a bad movie about a bad cop ( penn ) with a bad attitude and a bad disposition who have a bad guy in a bad way up to his cajones in fast drying concrete . while be wait for the cement to dry and the film to figure out what it about and be periodically jerk back in time without rhyme or reason so we can watch event lead up to the cement thing . a boring junk flick overall and cement suffers from lack of a story and a clumsy execution and and that most ubiquitous of filmdom fault while no reason to care . a time killer for the needy couch potato at best . ( d plus ) .