Slashdot linked up this nifty composite picture of the earth at night. Be sure to check out the high-rez version, it's definitely worth the wait!

Of note: the clear demarcation between North and South Korea, the fact that Iran is mostly darkness while Iraq is actually not, the comparative lack of light coming from Australia, the trace of the Siberian rail road, and the checkerboard pattern of "tornado alley" towns.