Yesterday, the team at The Young Turks University created a little video segment promoting our big list of 500 Free Online Courses from top universities. As they rightly explain, the list lets you download free courses from schools like Stanford, Yale, MIT, Oxford, Harvard and UC Berkeley. And when you dive in, you'll discover 55 courses in Philosophy, 50 in History, 50 in Computer Science, and 35 in Physics, plus lectures from famous intellectuals like Richard Feynman, Leo Strauss, Bertrand Russell, Michel Foucault and Richard Dawkins. Finally, you can usually access the courses from multiple sources -- YouTube, iTunes or university web sites. So what are you waiting for? Dive right into the complete list here and start using your leisure time in a productive way.