I talked about social network analysis in my KM class this evening, and the question came up around what you do with a static analysis of an organization. Several students asked about what you do next, and I suggested that one could do follow-up analyses or even periodic analyses to show how a network morphs over time (hopefully in response to a change to a new desired state). These movies take this to the extreme and show the linking behavior between a number of weblogs over the course of 40 days. And the demos give you some controls. Of the single-blog demos it is interesting to see the basic hub-and-spoke nature of the linking networks.
Link via Bill Ives at Portals and KM. His blog is highlighted in the 4th movie and on the demo page. (Can I do an analysis of Knowledge Jolt?)