In a weeks time it will be 8 years since the 2001 attacks on the states. Today the herald published a list of top 10 conspiracy theories: http://www.nzherald.co.nz/technology/news/article.cfm?c_id=5&objectid=10594797
It makes for interesting reading but the best link in it is a popular mechanics article on debunking 9/11 myths, the article is 4 years old but still very interesting: http://www.popularmechanics.com/technology/military_law/1227842.html?page=1