If there's one thing I agree with the neo-con wingnuts around here on it is that the credibility of the official story vs. the credibility of the "truther" theories are at opposite ends of the scale. We just disagree on who is at which end.
To me, refusing to believe that 9/11 was orchestrated by our own government is like refusing to believe that Earth is round.
BTW, there is a new 2009 version of "Loose Change" streamable in HD on Netflix, with more info that wasn't available at the time of the original documentary. I highly recommend it.