Eben Moglen: Discusses the philosophical and political ideas behind free software. He argues that free software is about allowing individual creativity. If you donâ€™t â€˜getâ€™ free software you need to watch this speech.
Cory Doctorow: Provides a bit of history on copyright change and how the incumbent industries always try to stop progress. Lots of good DRM discussion as well.
There is no future in which bits will be harder to copy than they are today â€¦ Any business model that based on the idea that bits will be harder to copy is doomed. [Cory Doctorow (2006 RedHat summit in Nashville)]
I found both of these speeches to be inspiring. Free software is the start of a wider revolution. As Moglen says in his keynote (paraphrasing), it is an incredible privilege to live through a revolution.