I plan on seeing Mr.Moore's movie in the near future. As with pretty much any kind of media it has to be taken with a grain of salt, if you believe everything you see/read as gospel, you are going to have an interesting life.
As far as his movie being made up of lies as certain media outlets claim *cough* Fox Nazi Channel *cough*, why doesn't someone sue him? If someone is blatenly lying, you can sue them for slander.....
As far as this country being over-taxed (a few people said it), we have some of the lowest taxes out of any industrialized nation!! This is part of the reason we have so few social programs and thus have massive problems with poverty, crime, wealth distribution etc.