Well, this is an interesting development at Google Labs.

http://labs.google.com/location?q=professional+developers+conference&geo_near=los+angeles%2C+ca&Search=Google+Search

I was wondering when this was going to happen.  I'll need to use it a few times to see if it's as useful as it sounds, but it's surely a good example of why Google is (and will continue to be?) on top.