Google 411 Service
Google 411 is a free service (around since January 2007) that allows anyone, anywhere to call the 1-800 number for an instant connection to a specific business in the Google directory. What is really cool about this is that it will send you access to a Google Map if you choose the "Map it!" option so I assume it's using the exact same directory listings that they use for the entire Google Maps archive. This works out really well for those of us who claim to always know where we are going...I personally still get lost in the city that I have lived in for almost 18 years.
This is especially useful for those of us who still use an old-school cell phone with poor internet access...(1-800-466-4411)