This is so simple, it’s cool: http://envisioningdevelopment.net/map

I especially like the hourglass-like effect way of populating the columns. It gives one the feel of really counting things. Like when you switch between East Harlem and the Upper East Side.

I would like to be able to see the distribution over the whole city, or the gradients between neighborhoods, but that’s just me. I think the design is neat and clean, and tells a very compelling story.