Also from Carolyn come these links to a variety of TED Talks. TED, in case you're wondering, stands for "Technology, Entertainment, Design." Their website lists their mission statement:
We believe passionately in the power of ideas to change attitudes, lives and ultimately, the world. So we're building here a clearinghouse that offers free knowledge and inspiration from the world's most inspired thinkers, and also a community of curious souls to engage with ideas and each other.
I think we can all agree with that.
Carolyn's selection of TED clips: