9/11: Why Not Planned Demolition?

[liveonearth]

This is a ten minute video with some good footage of the south tower falling.
I think this guy is asking the right questions.
http://www.youtube.com/watch?v=IwQa5eokieY
(thanks to aegis_one)

And here's another one that brings up questions for me about flight 93:
http://www.youtube.com/watch?v=JZekosYOmXc&mode=related&search=