Did you know there are 608 places in the world named San Francisco? This site is a geographic name server that can tell you how many places in the world share the same name.
This site shows the world population through generational history and displays information about specific locations. Overlays help illustrate different aspects of the changing dynamics of the earth's population over time.
This page at Maps.com, an online map store, has great geography games, including a U.S. Capitols map game, a geographic continent map game, various "Find It" games, jigsaws and crosswords, and many more.