I LOVE Google Maps. Ever since it launched it's fascinated me. I play with it all the time. I surf Google Earth for fun. I even use the Moble version of Google Maps on my cell phone. Now Google has enabled "embeddable" google maps... if you encounter one, rather than getting a static image of a map on a web page you can get a live map that allows you to interact with it.
For instance, here's a map that shows my neighborhood (My wife would kill me if I actually gave out our address on here :) )
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If you browse around you can see Intercontinental Airport (IAH), Houston, Lake Houston... well anything... because it's a live Google Map.