I think that there are definite inconsistencies regarding 911 that have yet to be addressed officially. And that some are of the nature of simple physics which is why I guess the website's name is Physics911. I do not think that these inconsistencies prove anything in and of themselves. But they are very glaring.
I also do not believe that Bush himself was in on 911. That look he gave in the classroom as the man whispered in his ear was one of genuine "Oh my
God" terror (which isn't the most resassuring expression to be made by the leader of your country, but it was honest).