The yearly TED conference (T for Technology, E for Entertainment, D for Design) brings together on one weekend 50 of the best thinkers and inspiring public figures to give a talk of 18 minutes each. The event is all about sharing ideas and concepts. According to TED's website, the conference in Monterey, California is sold out 1 year (!) in advance. This talk is from Feb 2006. I found it interesting enough to link to it from this blog as I found it again today. This is one of these presentations which don't lose value by being 1 year old or older.
It is worth taking notes and apply the new knowledge. Enjoy it.
There are far more talks available on TED's web-page. You can not only watch them online, but also download them to your computer. Follow this link