Sirlan - no doubt Michael Moore defines bias. Anyone who knows his work knows that he takes a strong viewpoint and will present everything that fits only his case. In fact, despite the fact that I support his work and am against our current president, I can easily admit that most of Fahrenheit 9/11 must be taken with a grain of salt. Much of the arguments he makes (through narration and juxtaposition of footage) is accomplished simply through the magic of editing.
For example, he'll show footage of dying Iraqis and bombs going off in Bahgdad, then cut to footage of a soldier or politican saying something that seems incredibly cruel and insensitive. However, the reality is that they may be talking about something TOTALLY different, but when taken out of context, sounds like they're the biggest A-holes alive.
The important part of this film are the facts that Moore presents. Not his propoganda, not his crazy and wacky mixing and matching of footage, but the facts. Such as Bush's ties to the Saudi's. Such as allowing 23 Saudi's, including 6 or so members of Bin Laden's family, to fly out of the country when all American's were grounded. Such as going into Iraq when they had absolutely nothing to do with the 9/11 attacks, as confirmed by the CIA, FBI, and the 9/11 Commission.
So yes, while this documentary (and I know some of you refuse to even call it that) is extremely skewed and slanted, I think instead of ignoring it for that fact, it might be worthwhile to watch so as to help you make a more informed opinion. If you know your stuff and are steadfast about your viewpoint, a film like this will most likely not change your opinion. What's important is that you hear arguments from both sides, extremist or not, and make your own decision.
And vote!