Here is an article with video that you might find interesting. For more than two years, conspiracy "nuts" have been contending that Building 7 of the World Trade Center complex (a block away from the twin towers) was purposefully demolished in an industrial-type, controlled demolition. No planes hit that building and very little debris from the twin towers landed on it. There was only a small fire on the upper floor. It is important to note that no modern steel skyscraper in history has collapsed due to fire.
Skyscrapers just don't fall down as any civil engineer will tell you. Yet on 9/11 three skyscrapers collapsed in one day, with one of them (building 7) falling for no apparent reason. Even when building 7 fell, major news anchors like Dan Rather reported live that it looked like a "controlled demolition".
To make a long story short, conspiracy theorists jumped all over the video of building 7. The US government conducted a "study" and quickly determined that the building probably collapsed due to some unkown reason (eventhough the only fires were on the upper floors). They absolutely denied any planned demolition. But now, two years later, the owner of the World Trade Centre site, Larry Silverstein, admits in a PBS documentary that they did in fact demolish building 7 on 9/11! Of course the major media is not focussing on this story. And the big question remains - how did they demolish the building on the afternoon of 9/11 when it is a known fact that it takes a couple of days to carefully rig a building for a controlled demolition; and that is under "normal" conditions. On 9/11 there was total chaos, fires that had to be put out and hundreds of dead firemen earlier in the day. When in the world did they get a chance to wire the entire building for collapse? If they did wire it, this could only have been done on a prior day. That's my conspiracy rant for the day! :-)
Video of WTC Owner Admitting to Demolition of Building 7
Article about WTC owner and building 7 demolition