Via this post on we-make-money-not-art, to the left is an awesome map indicating the cost, by block, of incarceration. The map is a graphic by Eric Cadora and Charles Swartz helps you understand visually the expense of lack of education and incarceration.
The artists clearly thought about visual representation and included source data (Tufte emphasizes source for legitimacy regardless of authenticity).
On the flip side, the actual project web site is close to unusable with all links launching frames without an address bar. What were they thinking?
This design does require the user to work and renders the information secondary to the display, which is not an ideal result.