Well, before watching that film I had similar thoughts about 9/11 conspiracy theorists, but the questions and comprehensive nature of the film have compelled me to question what I thought about 9/11. Not everything there is credible, but the film does raise some serious concerns about the whole situation that should be addressed, while also pointing out that some things are being withheld and not released. If you aren't interested in examining and accessing what they have to say, then I don't think it is fair to so comprehensibly dismiss their claims.
Without looking at both sides of an argument someone can't come to a definite conclusion, and I was guilty of that before I watched this. I thought it was just conspiracy nuts, since I had seen some documentaries and read a few articles from the other side of this debate before, but this film addressed many of the things that I had believed about the events of 9/11.
I'm not sure I am ready to conclusively say it was a government conspiracy, but I can't rule it out anymore due to the number of questions that haven't been answered adequately. For me the film was a real eye opener, and I would recommend working your way through it in a few sittings.