OH MY, this is so cool.

http://maps.google.com (via Julien Couvreur).

I don't get how they make money on this one yet.

Of course, I just created a SlickRun (the sweetest application launcher) shortcut for this:

magicword=map
filename=iexplore.exe
parameters=http://maps.google.com/maps?q=$W$

then type map sfo and you will get a map of the SFO airport.

For MSN Desktop Search that would be:

@map,http://maps.google.com/maps?q=$w