Google Public Data Explorer

http://www.google.com/publicdata/directory

I hadn't seen this tool from Google, but it reminds me a bit of Gapminder. Some of the data doesn't appear to work very well (including, unfortunately, the California education data), but it provides a quick way to summarize a large dataset. I hope Google continues this effort, and they should see benefits from having highly curated datasets, much like Wolfram Alpha.