Check out this article in Aspen Peak Magazine about skinning, which seems to get more popular every year. I just finished the Power of Two last weekend in very tough conditions, but it was a great challenge as always.
From Aspen Peak: Even as skinning (a.k.a. uphilling, a.k.a. ski touring, a.k.a. ski mountaineering, a.k.a. SkiMo, a.k.a. pick a name people!) continues to gain popularity – carving swiftly from fad to mainstream – there remains plenty-a-flat-lander who raises a confused eyebrow at what seems a ludicrous endeavor.