Our review of Fahrenheit 9/11 is now online. Verdict: Go see it. Even if you think you'll hate it. It's a long piece, with spoilers all over the place. Though the spoilers are such things as "we went to war in Iraq" and "Al Gore ended up losing the 2000 election" – so if that's a spoiler to you you probably are in some trouble.
Seriously though, the movie is discussed at length, so don't read if it you have already decided to go see it – read it afterwards and argue away with us!