Three Los Gatos locations are using Firetide's mesh networking technology to provide hot spots: The Opera House Banquet Meeting Facility and the Hotel Los Gatos have both built networks. In addition, the Opera House donated an AP to the town of Los Gatos to provide Internet access to the town plaza located across the street.
Firetide caters to challenging deployments that are difficult to wire because Firetide uses 802.11 radios for backhaul. The release doesn't seem to be posted yet but should be here at some point.
Strix is another vendor that uses wireless for backhaul. These vendors should be attractive to the cases where wiring is really difficult, like old buildings on college campuses or downtown.