If anyone actually wants to spend more than a few minutes in an attempt to understand some science behind the obesity epidemic:
http://www.youtube.com/watch?v=dBnniua6-oM

It does not go into detail about genetic/racial differences in how foods are processed in the body (it is outside the scope of the lecture) but it does attempt to de-bunk the notion of calories in, calories out being the primary concern when talking about obesity.

I really have no interest in arguing with anyone about this. Every person can choose what they want to believe. But I think it's incredibly naive so say that obesity is purely a result of calories in calories out and that obese people only have themselves to blame.