I was 15. We were getting out of Vietnam. I was - as most teenagers do - was learning how to think as an adult, and not as a child. On that day, I watched this, and nothing was ever the same again.
This was the intellectual turning point for me, and it's now available to anyone who wants it, courtesy of Mr. Gore's most excellent Information Superhighway. It's a little dismaying to compare the 49,000 page views of this to the 49 Million (or whatever) from Honeybadger.