Spy (B+), the latest collaboration between Bridesmaids director Paul Feig and his comic muse Melissa McCarthy, is both a successful send-up of espionage films and a running showcase of hilarious dialogue and pratfalls. Although it falls into the overlong territory (Judd Apatow started this trend in comedies), it is stuffed with double-crosses, witty quips and madcap action. McCarthy is a hoot as an unexpected but ultimately highly credible heroine, and she becomes more and more comfortable in her own skin as she dons an array of frumpy disguises. Rose Byrne is a fabulous foil as an Eastern Bloc baddie, with piercing, non-ironic zingers leveled at our protagonist. Jason Statham and Jude Law are surprisingly daft in their comic moments as well. The film is a great escape, brassy, vulgar and a laugh riot.