I saw this vegetarian/vegan cook, Tal, making a cream soup recipe on Oprah the other day. Since it was a vegan recipe, he couldn't use actual cream...so he made a substitute out of raw cashews. I think it would be a great substitute for us, even if we're okay with dairy, since it's good fats. Haven't tried it yet, but would love to hear about your experiences!
Here's the recipe:
Cashew Cream (Substitute for Heavy Cream in Recipes)