I found a 45 minute clip of Matt Cutts from the SES conference in London a few weeks ago. Great stuff. It's so nice to see that google is becoming more and more transparent about their SERPs. You can see the videos at this ning.com site just for webmasters: http://seowebmasters.ning.com It's definitly worth the 45 minutes, just play it while you are link building or working on something else, you really just want to hear the audio.