Mean Girls

Screenwriter Tina Fey, who appears as a sympathetic teacher, has a good sense of how girls like Regina operate to establish their domination, appearing to be sweet and supportive but in reality being competitive, duplicitous and manipulative, and always surrounding themselves with people who will add to their power and not challenge them. And Fey's superb sense of comedy gives the script has some biting humor. Her Saturday Night Live colleagues lend support to the cast, with Tim Meadows as the school principal, Ana Gasteyer as Cady's mother, and Amy Poehler superb as Regina's mother, who insists, "I'm not like a regular mom; I'm a cool mom!"

There is much that is fresh and sharp in this movie. But it has an uncertain hold on its plot and ends up pulling some of its punches and throwing in teen comedy clichés we have seen endlessly in dozens of movies that all blur together.