Andy Woodworth has a list at Agnostic, Maybe to keep you busy for a while:
1) Ken Robinson – Schools Kill Creativity (20 minutes)
2) William Kamkwamba: How I Harnessed the Wind (6 minutes)
3) Malcolm Gladwell – What We Can Learn from Spaghetti Sauce (19 minutes)
4) Mark Bezos – A Life Lesson from a Volunteer Firefighter (5 minutes)
5) JR – Use Art To Turn the World Inside Out (25 minutes)
Read his reasons after the link.