Was 9/11 a government plot?

[annalin]

This is an extremely disturbing video. Everyone should watch it. It's not disturbing in an ew, gross kind of way, but in a, that makes sense kind of way.

http://video.google.com/videoplay?docid=-5137581991288263801&q=Loose+Change+2+edition&pl=true

Is it right? Do I want to know?