This Christmas my best gift has got to be the Thickskin Union Suit from Immersion Research, its a one piece under-layer to wear under a dry-suit, you enter through the neck which is made of very stretchy neoprene. Being a one peice it means that you don’t end up with a cold spot wear your top and bottom layers meet (or separate).
We found it at Midwest Mountaineering in downtown Minneapolis.
I wish I had had it for the paddle last Tuesday… brrrr. The Tuilik is also officially mine now so I don’t need to feel guilty about wearing it any more.