Raspberries
Blackberries
Blueberries
The berries above are the "sunscreen" that Mercola recommends. Yep, he recommends "internal" sunscreen in the form of antioxidants. He has lots to say about vitamin D in this article: http://articles.mercola.com/sites/articles/archive/2008/3/15/vitamin-d-in-your-skin.aspx