Stallone's fourth flick about mercenary is ultraviolent and artless
                                
                                
                                    (Newser) -
                                    Sylvester Stallone's latest, and last, film about Vietnam vet/mercenary John Rambo isn't short on violence. "Body parts go flying, blood gets applied with a fire hose, spleens decorate the trees," writes Andrew Wright of the Portland-Mercury. Unfortunately, the movie is short on everything else. "One would be...