There are well over 100 conspiracy theories in the "9/11 Truth Movement". Exactly zero percent of them are true. Each relies entirely on its believers not checking its facts, because with even the smallest amount of research they quickly fall apart. The goal of the "9/11 Debunked" series of videos is to reveal the blatant lies behind these theories, one at a time, in order to save the historical accuracy of 9/11.
Much of the research credit goes to the folks behind the following excellent debunking websites:
911myths.com
wtc7lies.googlepages.com
debunking911.com