Taming the zucchini glut from the garden: Any good, simple soup recipes for freezing?

Thanks to everyone for the suggestions. I combined Midge's recipe with a zucchini soup recipe from Rosalind Creasy's book "Cooking from the Garden", and made several tweaks. The result is a creamy Zucchini Cilantro Soup that I think tastes good and took care of 4 lb. of zucchini (will post that recipe later). BTW Creasy is the author of a fabulous book, "Edible Landscaping" that makes you want to turn your front lawn into a Garden of Eden.

A friend made this soup and it was really delicious. She said it freezes very well:

http://www.foodandwine.com/recipes/zucchini-and-fennel-soup

Also, you can try out this soup (good for the summertime): http://www.food52.com/recipes/270_cold_curried_zucchini_soup

And this: http://www.food52.com/recipes/647_green_goddess_soup

Here's a super basic zucchini soup recipe I make often in the summer: Saute a chopped-up onion in 2 TBS butter and 2 TBS olive oil until translucent, add 6 small zukes or summer squash (chopped), couple cloves of crushed garlic, 1/2 tsp salt; couple grinds black pepper. Cover until veggies are crisp-tender (10 min-ish). Remove from heat and stir in a huge bunch of basil or mint or whatever herb you have a ton of. Puree in batches in a blender.(I freeze it at this point). To serve, add 1/3 part chicken stock and reheat. Top with generous dollop of Greek yogurt. I've also served this cold and at room temp.

I have made this one - it's delicious - I think you could up the amount of zucchini:

http://www.food52.com/recipes/2444_very_veggie_soup