I love what Google has done with Street View. Taking the technology indoors just does something completely different for me than outdoor shots. In this place it lets you look at intimate details of what used to be other peoples' every day lives. There's so much to explore. Can any one read this blackboard? http://goo.gl/maps/zWAqm
I'd love to see a hack that lets one walk around in first-person inside an environment using Street View imagery, like a video game. Maybe the imagery is sufficient for that if used right.