The Worldmapper has some unique views of mapping data and probably the most interesting one to me was through international power usage by type. The data is based back in 2002 or 2001, but still interesting to note the differences between hydroelectic power, oil power, gas power, coal power, and nuclear power:

Hydroelectric

Oil

Gas

Coal

Nuclear

Fascinating to see which countries rely on only one major source of power such as South Africa on coal or how the United States consumes every type available for power generation. I am surprised at the amoung of oil power Japan uses as I had thought Japan had reduced a lot of their reliance on oil to focus more on nuclear power. South America heavily uses hydroelectric power, but am unsure as to whether that is due to low power usage or millions of dams along the many rivers snaking through the Amazon.