Hong Kong superstar Jackie Chan is always a delight to watch. His charm, wit,and impeccable timing make his kung fu moves closer to Charlie Chaplin or Jacques Tati than to Stephen Segal. He has had a hard time finding an American script to showcase his talent, but comes a little bit closer with this action comedy. Chan plays a Hong Kong policeman who comes to America to find the kidnapped eleven year old daughter of his close friend, a Chinese diplomat. He is teamed with comedian Chris Tucker, who brings energy and some freshness to the tired role of “LA cop who doesn’t work well with others but is so good they have to put up with him.” Chan and Tucker seem to genuinely enjoy one another, and both share gifts for physical comedy that provide some very funny moments amidst the usual round of explosions and bad guys. And the little girl (Julia Hsu) is adorable, with a Mariah Carey imitation that is utterly delicious. The movie has the energy that was missing in recent retreads like “Lethal Weapon 4” and “The Avengers.” Parents should know that it includes a good deal of cartoon-style violence and many of the usual swear words (and Chan learns the hard way that a black man may be permitted to use the n- word when anyone else may not).