On one hand, Google Streetview gives you the banality of the places we live in. Sure, you can get the occasional horse-headed man every now and then, but the value in streetview is providing a look at the world as if you were strolling right down Main St. yourself. Fundamentally different from streetview, Instagram functions primarily to color in that banality with filters and quick photo editing.
Combine the two and you get The Beat, a mashup of the two photo-based services. A couple of my favorites are below, but probably best to try out for yourself.