Globo.com has created two interesting Google Maps for Brazilians.
G1 Educação is a Google Map of the distribution of educational courses available in the country. The map is a nice example of hoe Fusion Tables can be used to create a searchable map with the Google Maps API.
Users can refine the results shown on the map by type of course, type of institution and by mode.
Mapa do Alagamento is a crowd-sourced map of rain and flooding around Sao Paulo in Brazil.
The map includes a visually effective polygon masking effect to hide all of the map except for the area around Sao Paulo. It is also possible to view the submitted data as individual map markers or as a heat map.