Tricia Helfer, Battlestar Galactica's Number Six, will pose nude in next issue of Playboy magazine. From
Playboy's next month page:
Tricia Helfer - On Battlestar Galactica she's known as Number Six, but we can't think of her as anything less than a 10. The leggy former top fashion model makes love to our camera in quite the spread.
Here's one Tricia Helfer's nude picture from one of her earlier photoshoots, source unknown.