I've recently started walking the dog for three miles every morning. It's a great for clearing my head before work and making sure I have some "me time" outside of the daily work grind. During these walks I listen to lectures from the Open Yale Courses. Back in August I started my mornings listening to lectures on the Hist 210: Early Middle Ages; I welcomed fall with Hist 202: European Civilization. Recently I finished up Phil 181: Philosophy and Science of Human Nature and I found a lot of the ideas it presented professionally relevant.