360 Panoramas in Google Earth

I've been waiting for someone to add some 360 degree panoramas as a PhotoOverlay in Google Earth 4.2 using its new ability to embed spheres. Now my wait is over. 360 Cities has begun creating a Google Earth file for their thousands of panoramas.

At the moment they have only converted a few of the panoramas. But you can have a look at the Stockholm KML to get the idea. It is quite impressive to be able to step inside the panorama and be able to look all around.