The movie certainly delivers what its title promises, but it's never clever or original enough to be as much fun as it could be. Owen is decent as the cliched anti-hero, but Giamatti goes just a few notches too far over the top and Bellucci has trouble with her lines. Solid - if over-edited - action scenes, but the story is dull and repetitive before getting completely ridiculous.
An incredibly fun over the top mess. If you understand the joke there is much to enjoy, but if you're the type to over-analyze things or take something seriously when you clearly are not meant to then give this one a pass.
Ironically, this is a sort of anti-hollywoodian movie. Pushing several and typical symbols and stylemes of Hollywood's great narrative to the edge of the ridiculous, Shoot'Em Up dismantles the apparatus of the mainstream movie. It's like a suicide for a right cause: making us know the vacuity of certain kind of cinema. And it's a quite funny watch, anyway.