One of the first talk I watched was Grey Commons by the swedish Group Piratbyrån.
They're a very sympatic organization completely opposed to copyright. That's a view I often miss in the discussions about »Intellectual property«. Protests are often limited to specific cases or copyrights getting more restrictive (like DMCA, software patents etc.), but nearly nobody questions if »IP rights« are of any use at all for the society.

The guys had a lot of good thoughts and especially criticized »low level« opposition like finding »alternatives to copyright«. I could agree very much with their arguments and I hope that their more radical views are taken up by people in other countries.