Last year, Oklahoma City launched the world's largest muni Wi-Fi mesh network (not residential use, just public safety and other muni uses). Shortly thereafter, they won an award for the public safety aspects of the network.
A GovPro story now suggests networks like this Oklahoma City network could be leading a renaissance for muni wireless networks:
For instance, three years ago, Oklahoma City launched a muni-wireless broadband network using equipment from Tropos Networks covering 555 square miles. Today it has been adopted as the primary network used by all city departments.