If anyone missed and wanted to see the BBC program
BBC - BBC Three Programmes - 9/11: Conspiracy Road Trip
(Be warned though does feature one of the world's most dislikeable women)
If it had been a conspiracy (which I do not in any way believe) would it not have required months/years of planning involving a multitude of people? If so surely something would have leaked out (through loose talk/paper trail) about the planning stage if nothing else.