I listened to an inspiring keynote yesterday by the FSF's General Counsel Eben Moglen. The recording is from the O'Reilly Open Source Conference. This is one of the best talks I've heard regarding the state of open source and licensing (or any other subject for that matter).
Besides being about a subject that fascinates me, I have to say: Damn! - is that guy ever well-spoken. Knowledgeable, passionate and inspiring, all in one go. If you're into free and open source software, or just want to hear a great keynote, you owe yourself a listen.