http://www.dhslides.org/mgr/mgr060509f/f.htm Gary Taubes speaks for an hour about why we gain weight. With slides! Do you think you know about why people get fat? Is it because people eat too much, and if they just ate less and got off their big fat asses and did some exercise it just wouldn't be a problem? And have you noticed that the sun revolves around the earth? Wait, it doesn't? Actually the earth revolves around the sun? How the hell do we know that?
A little on the scientific side, but I'm going to trust that anyone who is reading my blog can follow the discussion (he only segues into highly technical discussions about twice.. most of the time it is really really easy to follow.)
Enjoy!