Food hysterics and scares, and diet myths might make a good episode or two.
I'll tell you the whole bogosity behind HFCS: first of all, yes, it's crazy bad for you, like sucrose is. You get mega calories from it with no other nutritional contribution.
Why is it in everything? Because our government heavily subsidizes corn. Just grow corn, and you get lots of money from Uncle Sam. This makes HFCS a lot cheaper than it ordinarily would be, so manufacturers put it in almost everything to enhance the taste. This is one thing that's contributing to the obesity trend (I REFUSE to call it an "epidemic") among the poor, since they rely so much on cheaper food which tends to have a lot of this.
One more example of the Doctrine of Unintended Consequences. If only more people had read Hazlett...