"Loose Change" was a good introduction for most of us to asking some extremely important questions regarding the events of September 11, 2001. Until recently, these theories have been ridiculed as "junk science", and you'd be considered a fool for even bringing it up. Most of these early theories were in fact, junk.
Those days are over. Dr. Steven Jones of the BYU Physics Department has published a paper which fully analyzes public evidence with easily reproducible scientific calculations and laboratory experiments. The paper is very technical by nature, and very long (it took me about an hour to read it, including the time I spend watching the included video evidence). A good summary of his findings can be found here.
He doesn't try to pry into the political realm; he is a scientist, and only urges that a multi-disciplinary, independent investigation look into the aspects which he and his research team are not qualified to study. He does, however, tea-bag the official explaination. I'll put it to you this way: if a government explaination had nuts, they just got kicked by Dr. Jones.
UPDATE BND: I think we may have located spooky1. Check out this Blabbermouth thread. You will need to scroll down to the bottom. Damn Axe, you ripped this dude to shreads.