ICPSR (Inter-University Consortium for Political and Social Research) http://www.icpsr.umich.edu/ The ICPSR is the largest collection of Social Science Data in the world. Topics included in the archive include: economics, government, health care, crime, education, etc. This resource is also available via Databases at Emory. The Data Center also maintains an archive of ready-to-use ICPSR datasets which are accessible via the search engine on the Data Center home page.
Europa: The Gateway to the European Union http://europa.eu/index_en.htm Europa is the offical website for the European Union. And, truth be told, the site shares some of the (alleged) pathologies of the Union, as well.