I saw this video today, and it got me thinking. When I ski, I use a variety of techniques for longer turns. I guess it just depends on what I'm trying to do.
I go back and forth between letting my upper body follow my skis, like in this video, and keeping my upper body facing down the hill.
I think I would tend towards keeping my upper body facing down the hill in a racing environment, where I want to be looking at the next few gates. This feels like it is a more aggressive approach. GS comes to mind here. Might not apply as much to Super G and Downhill.
When free skiing, I find myself letting my upper body follow my skis because my line is not predetermined. As my line changes, the direction I want to be facing changes with it. If my goal is to ski across a trail, there is no sense in facing down the hill.
I'm interested to hear what everyone else thinks.