We all know its depressing/frustrating to be a libertarian and watch tv. But the same applies to being a philosopher and watching tv.
Tonight I half-watched a series of National Geographic specials about vision, memory, illusions, and such. It was fascinating, and all the science in it was sound (AFAIK). But not all the purported science in it was science. What the series did (as is fairly typical for science programs) was to translate the scientific results into a conceptual framework that is actually philosophical (and philosophically controversial), not scientific. All the stuff about colour not existing in extramental reality, about our brains filling in background information, and so forth are part of a particular philosophical interpretation of the scientific data, not something one can simply read off the data.
I happen to think that the particular conceptual framework into which the National Geographic series was cramming its data is a deeply mistaken and oft-refuted philosophical confusion. But thats not my point just now. My point is that the people who make shows like this dont even realise that they are making any philosophical assumptions. And that in turn is because the entire field of philosophy is essentially invisible in our culture (meaning, in this context, American culture; things are a bit different in, say, France). People who are interested in what are actually philosophical questions generally turn to science or religion, because they are simply unaware that there are philosophical methods for addressing such questions.