From a story on the BBC World Service, I learned about this cool mapping site. Basically, they've created alternate map projections (though based upon the Mercator projection it seems, as it's still rectangular), where instead of land mass being the driving factor, various stats are. I haven't looked through all of them, but the income ones are definitely interesting. Comparing the living on up to $10 a day, vs. those living on over $200 a day, shows how wide the income gaps are.
The age of death maps are interesting too - I made a fake slideshow of them by opening each one in a tab, and then flipping through them chronologically.
Political wonks out there could have fun comparing the public health spending and private health spending, though there's no good "health" metric.
