In honor of today's opening of the compendium of falsehoods that is Fahrenheit 9/11, read this from the neutral rhetoric-debunkers at Spinsanity.com regarding Bowling for Columbine.
Here's the key concept:
Satire is not an excuse for dissembling. Great satirists like Jonathan Swift and Mark Twain used hyperbole as a form of social criticism. Michael Moore, however, uses lies, distortions, and nonsensical arguments to mask cheap attacks and promote his own political agenda. Take him seriously at your own risk.
Here is Spinsanity's full coverage of Moore's lies. I think it's interesting that all three Spinsanity contributors have written articles slamming Moore.