@Boris
Well, that's just nonsense for TV. Oliver doesn't give a damn. He's making money off the problem just like everyone else.
I'm talking about staples. Beans, rice, corn, potatoes, etc., with smaller amounts of non-processed meats and veg. We eat about 5 times as much meat as we actually need to right now. Our processed foods are basically made of the staples I mention, only with the nutrition removed and the calories/fat/salt jacked up through the roof.
If you know how to cook, you can produce cheap, tasty, nutritious food in quantity. No, it won't taste like a fast food burger, but that is actually a good thing. We've been programmed to demand an entirely unnatural level of salt/fat/sweet...to the degree that anything natural seems bland. The problem isn't real food not tasting great, the problem is fake food tasting artificially great.
Yes, eating fresh produce costs more. But it needn't be the main course every day. We buy a giant tub of organic greens for 6 bucks at safeway once in a while. Eat the stuff every day. Not expensive. Waaay cheaper than hitting a fast food place.
Point I'm making is that real cooking is dead, except apparently as an expensive gourmet exercise a la food network.