Capturing Tessa Virtue and Scott Moir win Gold for Canada in Vancouver was definitely one of the highlights of my Olympic experience. They were outstanding and amazing to shoot!! I used my Nikon D3s with Nikon 200-400mm lens (the perfect zoom to shoot the figure skating). I was able to shoot at 3200ISO which allowed me to exposure at f/5.6 at 1/1250sec.
Wishing you both good luck in Sochi!!!