I think this should be a TOP priority. Centova's graphs are OK, but they do seem to load kind of slow. Use of Google Charts would be phenomial!

For example: https://code.google.com/apis/ajax/playground/?type=visualization#geo_map

Would be easy to skin too!

Graph load speed is limited by the AJAX request -- it really has nothing to do with the client-side rendering, so this wouldn't improve performance and it would introduce a dependency on a third party for an arguably critical piece of Centova Cast functionality.  It might become a plugin one day but I don't see it ever completely replacing flot in Centova Cast.