Via Ace of Spades, and then Secure Liberty, I have another lovely toy for the Barking Moonbats! Go check this out, and tell me how much of it you believe. Any answer other than "0% belief" will indicate just how loopy you really are...
Snopes has a nice, simple de-bunk - Urban Legends Reference Pages: Rumors of War (Hunt the Boeing!) - that would be good for you to read. It's basic and clear enough that if you know how to read, you will be convinced that an airliner did, indeed, strike the Pentagon.
Geeze. Some people are really smoking some interesting stuff!