When the world-famous Hancock reluctantly swings into action -- he can fly at supersonic speed, lift any weight and is impervious to all weapons -- his drunken recklessness invariably causes more damage than it's worth. Although valuable to the police, Hancock has a bad name with the public for his destructiveness, impudence and all-around bad attitude; an adjunct to this is his foul language, which treads the very edge of PG-13 permissiveness and will no doubt catch many July 4 weekend kid-herding parents unhappily unaware.
The genre satire and numerous Will Smith moments, with the star throwing off the attitude-laden quips and looks auds expect from him, carry the first half without too much trouble, in anticipation of where the film will go from there.