Ed Felten, the legendary engineer who led the team that broke the music industry's watermarking scheme and whom the music industry threatened with legal action if he presented his findings at a technical conference, has given an amazing lecture on copyright and technology as part of the Princeton President's Lecture series, called "Rip, Mix, Burn, Sue: Technology, Politics, and the Fight to Control Digital Media." It's a fantastic primer for geeks, lawyers and civilians on the copyfight.
(Thanks, Michael!)
Update: Ed Felten sez, "The lecture is now available under a Creative Commons (non-commercial, share-alike) license. There's a page with license info and links to the lecture. At the moment it has the streams only, but I hope to add other formats as soon as I can. If anybody translates it into a different format, I would like to know so I can add a link to my page and/or redistribute the translation myself. [Note: Email Ed with your new formats, NOT Cory]