No Government would put that much time, planning and effort in killing it's own people. Plus, the video (mainly due to the player's resulotion) constantly appears grainy. Hence, I can't judge much.
"Look at the fuselage.... see how it differs from a normal plane..."
Sorry, I'm not a plane spotter.
As for the confiscation of the Pentagon tape. That has me worried. To release only 5 frames of the tape is going to give people the impression that they're hiding something. Of course, the administration is hiding something. Evidence of a massive security f**k up.
The controlled appearance of the collapsing towers also has me worried. Aviation fuel can, quite honestly, burn like a bugger. His comparisons with buildings that burned for 6 hours and such. Those fires weren't consequences of a passenger jet smacking into them. The consequent number of explosions can be explained away, too. It's an office building with many electric appliances. And the jet fuel, how ever much has found it's way down the building, could pop along the way.
However, the Bush administration would have motives for pulling this off. The climate of fear, The Patriot Act, Iraq, Afghanistan, etc.
I'm undecided, basically. It could be possible, but it'd involve an unbeleiveable ammount of time, planning and funding to effectively pull such a genocide off.