SkyVector is the Google Maps of Aviation

Thanks to Jeremy for this one:

Recently someone pointed me at SkyVector.com which can most easily be described as “the Google Maps of Aviation.” They’ve taken the aviation sectional charts for the entire USA, scanned them, broke them up into square “tiles”, and provide a smooth click-and-drag panning interface for navigating them maps.
Like Google maps, you can zoom in and out, drag around, and quickly get a feel for what’s there. And there’s some overlay data too. They overlay graphics for all known airports. You can click on one to get a detail page. For example, the page for Reid-Hillview in Santa Clara County.