Demographic API, getting to know my neighbours

Groovy Mother points to a cool Google Maps / Census data (200) remix created by AnalyGIS and SRC using a 'Demographic API'. I'm not sure if MSN's Vistual Earth has something planned along these lines , but it would be nice... :-)

This is the data set for the 15 mile radius around my home in Redmond, WA.
Very different to what my London home data (not covered) would look
like...

Total Population 15,280 65,432 181,189
Total Households 6,418 26,990 74,215
Median Income $65,826 $66,985 $66,079
Average Income $75,795 $87,375 $89,208
Median Age 33.10 34.00 35.40
Male Population 7,535 32,955 90,637
Female Population 7,746 32,477 90,552
White Population 12,386 52,383 147,514
Black Population 264 984 2,773
Am. Indian Population 79 335 848
Pac. Islander Population 24 129 356
Asian Population 1,611 7,873 19,846
Other Population 388 1,606 4,113
2+ Race Population 527 2,121 5,740
Hispanic Population 1,010 3,750 9,464