"A sinister exercise in moral frivolity."

Christopher Hitchens has some choice harsh words from Michael Moore's Fahrenheit 911.

To describe this film as dishonest and demagogic would almost be to promote those terms to the level of respectability. To describe this film as a piece of crap would be to run the risk of a discourse that would never again rise above the excremental. To describe it as an exercise in facile crowd-pleasing would be too obvious. Fahrenheit 9/11 is a sinister exercise in moral frivolity, crudely disguised as an exercise in seriousness. It is also a spectacle of abject political cowardice masking itself as a demonstration of "dissenting" bravery.

Hitchens backs up this opinion with lots of details. Metafilter has a discussion going.

A small side point, compared to a lot of important political things, but which ought to matter to people who care about art, is that Quentin Tarantino appears to be a fool.