Via Scoble, Google has post-Katrina maps of New Orleans (Scoble link). According to Scoble, the Microsoft Virtual Team is on it too, but I guess, Google beat them to it.
Watching CNN the last couple of days, I noticed that one of their specialists (literally) showcased Google Earth to show ‘hotspots’ and that. During the Iraq war, this kind of technology was (most) probably expensive. Good stuff, this.