We just returned from a week in Revelstoke BC which has some of the finest alpine singletrack I have ever seen, in addition to the most spectacular alpine views... glaciers and the jagged peaks of the Canadian Rockies in all directions are just part of it.
We did the classics of Keystone Standard Basic and Frisby Ridge, plus some other local favotries.
Here's the reward when you get to the cabin at the turn around point at Keystone...Click image for larger version.  Name: DSC00103-edit.jpg  Views: 301  Size: 125.6 KB  ID: 17319