People who think 9/11 was an inside job seriously need to have their heads examined. They cherry pick evidence that supports their asinine suspicions and ignore the mountain of data that goes against them. Debating these loons is like playing Wack-a-Mole - as soon as you knock one dubious claim on the head with the hammer of evidence, another claim pops up.
That said, if it weren't for 9/11 conspiracy nuts we wouldn't have 11 Settembre, a fascinating blog by an Italian skeptic with impressive technological skills. Enjoy.