Dartmouth professor Quintus Jett, who has been working on and blogging about efforts to rebuild the social networks of New Orleans residents using open source methodology, points to this excellent interactive Flash movie that shows the steps of the flood from the first levee breaches to the near-total submersion of the city. This is very much worth watching.
Also, here is an audio interview with Dr. Jett about his innovative work combining organizational management, engineering, open source, and social networks.
Wow, that is a good movie. Thanks for pointing to that.