GeoSpatial Heaven at http://koordinates.com/
GeoSpatial Heaven at http://koordinates.com
So I'm working on this Real Estate project and need to create boundary maps with cickable regions for an arbitrary list of cities... looked high and low for GeoData (shapefiles, KML, GIS, Arc, whatever) and finally struck gold, at least for California that is. Thanks to the people at CalAtlas and the Koordinates group i have exactly what I need and can begin working on the fun stuff with Google Maps integration.
I'll follow up on this with some examples of what I end up with.
Enjoy the link - Koordinates has some cool data.