Nationmaster: Nationmaster is "a massive central data source and a handy way to graphically compare nations. NationMaster is a vast compilation of data from such sources as the CIA World Factbook, UN, and OECD. . . . [Y]ou can generate maps and graphs on all kinds of statistics with ease."
The World Factbook: Flag, map, and information about the geography, people, government, economy, communications, transportation, military, and transnational issues on each of the nearly two hundred countries of the world.