Google has posted a video of a talk that Seth Godin, my favorite marketing guru these days, gave to Google employees recently. It is a synthesis of material from many of his books and is great stuff. Seth has been following up with several blogs posts, going into more depth on points he discussed in the video.
I spotted this via about 30 feeds I subscribe to. When something shows up multiple times in several feeds in a short time frame, you know there is something to it.