Italian Gas Stations (and prices) + Google Maps - pienorisparmio.it is a new Italian project that maps gas stations and current prices. It lists gas stations in Milano, Roma, Napoli, Torino, Bari, Palermo and Firenze
Italian Travel Blog Viaggioadagio mashes up blog posts with Google Maps (WARNING - loads slowly)
Champagne House Directory Mashup
Blog Post: French Wine Country locations
UneInvitation.com now uses Google Maps
Hot Air Balloon Rides in Germany - They have also created a map of Hot Air Balloon Rides for all of Europe!
Eircom's DSL-enabled exchanges + Google Maps
Google Maps + Lycos Route Planner Tool
Adoos Madrid/Spain Housing Mashup - More info here..
BedAndBreakfasts.co.uk - Google Maps based Bed & Breakfast search
5 buildings of Faculté Polytechnique de Mons mapped