There's a front page NY Times story today about the effects of high gas prices. It's a well written and researched article, but surprisingly it doesn't mention what I think is one of the most practical Google Maps Hacks out there: Cheap Gas, which allows you to find the cheapest gas prices in your area. As gas prices continue their inevitable creep towards $5/gallon I have a feeling I'll be using it more and more.

Gas Prices Chart
(courtesy NY Times)