This a video of an excellent lecture from Professor James Boyle on the Public Domain: enclosing the commons of the mind. He points out how today's automatic copyright system ("death plus 70") is a "cultural disaster of incredible proportions".
It's not only highly relevant and insightful even for people slightly less geeky than me, it is also highly entertaining due to his references to Internet realities ("hundreds of thousands of bloggers -- several of them sane! -- could use it!"), and therefore all of you should watch it -- especially if it's been awhile since you last listened to an interesting lecture ;) .