Stamen released their latest mapping project, onebayarea maps. It filters the view by the travel time between areas, and the median price of homes in each area. Important points:
1. It is not based on google maps but geoIQ. Map is nicer and more suitable for data mapping.
2. Median Price Data is not from census data but ABAG data. Most probably better organized and reliable.
Finally there is a mapping project which shows contextualized data based on a daily case and looks nice. Good Job from Stamen. You can also read the original post about their project on their blog.
