The glamour of food has made it something of a class leveler in America, a fact that many of these shows implicitly celebrate. Television likes nothing better than to serve up elitism to the masses, paradoxical as that might sound. How wonderful is it that something like arugula can at the same time be a mark of sophistication and be found in almost every salad bar in America? Everybody wins!
There are tons of quotable bits in Michael Pollan's "Out of the Kitchen, Onto the Couch"; this happened to be one of my favorites, because I really, really like arugula.