Google Street View

This is pretty cool - you can drag and drop the little human icon to a street and then a screenshot pops up. The screenshot allows you to do a 360 degree view of that street. The camera icon appears at locations with available street views.

Also, once you have the Street View open, you can click on the overlaid white arrows in the image and continue to go down the street within the street view, as if you were driving down the road yourself!

You can see it in action at this link

The official Google View page

The vid is pretty cheezy but it is a good demonstration: