It's done with about several different images. With a special program, or some extreme photoshop skills, you can achive that effect by skewing the images. The method has some retarted long name that I can't think of right now.
Attention! This is what the guy did. On the CWX wbesite there is a 360 degree view, http://www.crankworx.com/whistler09/. He took all that and assembled it together, resulting in a spherical appearance.
They are. It`s called a "planet", or spheric panorama. You can see here how to do this: http://www.detroit-madness.com/Site/Roadtrip%20Blog/B79F3205-BF8F-4ACA-A94F-69F1D676B430.html
wow