Following in Google's Earth footsteps, MSN now has a cool "local search" tool using satellite images. You can also check your location by wi-fi or IP Address:
Seems to be a little buggy in Firefox (big suprise there!)
It's also "open source" (so to speak) so developers can add the functionality to their own sites (can use say "Find sexy singles and get laid in _____ tonight!")
http://virtualearth.msn.com