TV Ontario produces a lecture format show featuring heavy thinkers. You can subscribe here. I'm posting links to a particular show I found especially illuminating on the subject of micro-financing and a new book, 'A Billion Bootstraps' by Eric Thurman. Here's the mp3 lecture but check out TVO's Big Ideas Past Episodes page – hundreds of hours of pro audio lectures from the likes of Deepak Chopra,and Naomi Klein, as well as many you've not heard of before.