Instant Game is a neat utility that allows you to create a setting. It also does a lot more, but for now I like the setting possibilities.
For example, here's the one that gave me ideas for the Boston 1771 setting I mentioned earlier:
Boston 1770's, Realistic, Supers, War.
how's that for a neat setting. Maybe the sun will set on the empire, or maybe the revolution doesn't take very long or maybe...
Here's some others that I hope to explore this summer:
Stone Age, Heroic, Undead, Demon
Cloud City, Realistic, Underground Pariahs, Realm of the Gods
WWII, Suspense, Dragons, Ship
War, Gothic, High Magic, Street Gangs
and many many more.