I chose to watch the keynote speakers at SXSW Interactive from one of the simulcast rooms, which was nice because I was able to hear great talks without the craziness of the actual keynote room. You can find video of all of the keynote speakers at http://sxsw.com/interactive/live. I particularly recommend the talk by Seth Priebatsch – on the second page of videos.
Enjoy!
Rev. Andrew Conard 