I think the stuff that comes out of the TED conference is some of the best on the net. If you’re not familiar with TED it’s a conference and the name stands for Technology, Entertainment, Design. The talks are diverse and I almost always find them fascinating. One of the best parts is they are almost all around 20 minutes, so you can get through one quickly.
This years TED conference is going on right now and here’s the talk Bill Gates gave. The title is How I’m Trying to Change the World Now. It’s worth a watch: