First off, I am very sympathetic to Michael Moore's ideas. I would love to see more gun control in the US, the Iraq war come to an end, and health care for everyone. I enjoy his movies for their entertainment value and because they champion causes I believe in. His methods, however, are disturbing. How can you trust anything the guy says knowing the following: The premise of "Roger & Me" was Moore's quest and ultimate failure to get an interview with Roger Smith. Turns out he did interview Roger Smith but decided to cover it up since it didn't make for a compelling movie.
Manufacturing Dissent is a fair documentary. The interviews are with people from both sides. Some love Michael Moore, some hate him. But the important thing is that a lot of the people interviewed worked with Michael Moore. The movie reveals that Moore is not necessarily in search of the truth, just in search of a way to validate things he already believes to be true. This movie is great for anyone who values intellectual honesty.
See Manufacturing Dissent for its content, because its production quality will not impress.