I'll reserve judgment until I see it for myself.
(Denny Crane: "I Don't Want To Socialize With A Pinko Liberal Democrat Commie. Say What You Like About Republicans. We Stick To Our Convictions. Even When We Know We're Dead Wrong.")
Sometimes i think conservatives try a little too hard to see bias. You are right though, i'll wait until the movie is out.
A filmmaker buddy of mine saw it at the Berlin Film Festival (he was on the jury). When I told him I was looking forward to seeing it, he nearly came across the table and strangled me. "Do not see this movie!" he implored, "It is one of the worst films I have ever seen. You will never get that two hours back!"
I've never read "Mein Kampf", but I can be reasonably assured that it's not a very good blueprint for building a democratic society. I've only read snippets of Michael Moore's books, but I'll bet they're all garbage like the snippets I read were. You don't necessarily have to put both hands in a stinking pile of manure to know that it's manure. Sometimes merely getting a good whiff is enough to deduce what it is.