I was recently introduced to TED or Technology, Entertainment and Design. If you haven't heard of it, it's well worth checking out. Their by-line is "Inspired talks by the world's greatest thinkers and doers" and the site has videos of presentations from past conferences.
When I first became interested in hackers and computer security many years ago, the first book I read was "The Cuckoos Egg" by Clifford Stoll. Clifford is the astronomer who back in the late 80's while working at Berkeley noticed the intrusion and ultimately helped capture the hacker working for the KGB .
Clifford appeared at the 2006 TED conference and the video "18 minutes with an agile mind" is now available.
Watching it, Clifford exudes a huge amount of energy and passion for his topics and this energy is infectious. So if you have a few minutes, check it out.