I've seen the uncut, unseen video and it was definitively Elvis who was helped by Ernst Stavro Blofeld, Professor Evil, Dastardly Dan and Muttley and you will never convince me otherwise.

Much easier ways to start a war, then to kill 3000+ of your own citizens. Why risk a security leak or the mass deaths of innocent women and children and the universal revulsion there is to this in all societies. Still that wouldn't pay the wages of conspiracy theorists and all of their documentary hangers on.
Watched the trash documentary once, personally I prefer a good Bond film, about as plausible, but much more entertaining.
I was working from home the day it happened and on the radio news that there were unconfirmed reports that an aircraft had hit one of the twin towers, turned on the TV news and watched in full horror as the second aircraft hit and the full horror that followed, including watching the towers collapse. There were NO explosions before the collapse.