Put in any address and use the up and down arrows to navigate. If your selected street is outlined in blue you can view the house at the exact address you put in as it is now.
When you enter an address you will see a picture of that place. There's a little map with a little man on it - you can move the little man up and down the block if you need to.
You can stand in the middle of the street and do a 360 degree turn and see all around you.
Cool website!
http://www.vpike.com/