I saw some of it. It seemed pretty good - but as ever with John Pilger you get the feeling he's just preaching to the converted. As the answer above shows, people who support George Bush are unlikely to listen to any point of view that opposes him (although some idea of what the film was about *might* have helped in this case - it has absolutely nothing to do wih terrorism).
The same is just as true of people who regard Bush as a genocidal fascist - they won't listen to any arguments from Bush's supporters. This of course isn't John Pilger's fault - what is any journalist to do in a world where people choose to disbelieve or disregard facts for ideological reasons? But sadly I can't see the film making much of a difference, worthy though it is.