Google Maps finally made Street View imagery useful by integrating it with driving directions. If you try to find driving directions in one of the 42 US cities that have Street View images, Google will include these images for each intersection. "It's not always easy to find your way around an unfamiliar place. To help with this, we've been hard at work integrating Street View into the driving directions feature of Google Maps so that now you can preview your route before hitting the road," says Google Lat Long Blog.
This sample for Google Maps API shows an even cooler connection between Street View and driving directions.