Robert Wright, author of The Moral Animal (highly recommended), has a free, streaming-video collection of stimulating interviews. The link is on the left side of this page. I just finished watching the latest one with Edward O. Wilson, who is fascinating and down to earth. I watched it over several sessions, usually while eating a meal or snack. Each interview is about an hour long, but indexed by topic so you can hear only the parts that look promising to you. When I stopped after each feast, I wrote down the elapsed time on a post-it. I scrolled back to that place when I next came to nourish my body and soul.