GeoHive: Global statistics site.
US Cities and Towns: Huge, useful reference site covering pretty much every town and city in the United States. Includes detailed statistics as well as original articles.
Climates of the World: US Government summary of the world's climates.
National Anthems: Computer music (MIDI) versions of the national anthems from nearly all of the countries of the world.
About.com Geography Section: A nice starting point listing lots of world geography resources.
Career, Education, and Life/Work Balance: A new but promising resource.