I don't have TV or cable; but when I go over to other people's houses who have it, I love to watch the Discovery Channel and the National Geographic Channel. One of my favorite shows is Dirty Jobs with Mike Rowe. Mike recently gave this STELLAR talk about the lessons he has learned from his work. He talks about how practical field experience trumps academic/theoretical research (one of my pet peeves), about the happiest people he has met, about bottom-up innovation, and hard work.
I was totally blown away. The first half will make you squirm, but there's genius in what he is saying. Watch it!