It has taken awhile, but arguably some of the presentations at the Ubuntu Live 2007 event were worth the wait. Head over to Ubuntu Live video site to see Marten Mickos, Eben Moglen, Jeff Waugh, Mark Shuttleworth, and others speak on open source, Ubuntu, and sundry topics.
I'm still waiting for Tim O'Reilly's excellent keynote to be posted. It's not there yet, but hopefully will be soon.
Thanks to the BoredandBlogging blog for the link.