Forever Yogurt, Chicago

Forever Yogurt isn't kidding when it claims that it has “literally trillions of possibilities” for combining frozen-yogurt flavors and toppings. At each location, a rotating selection of nearly 100 flavors and more than 50 toppings challenges self-serve artists to twirl, sprinkle, and festoon cups of fro-yo to their own taste buds' content. The store can accommodate preferences for low-fat, nonfat, nondairy, and no-sugar-added diets, as well as daily food-pyramid requirements for fresh blueberries, kiwi, and caramel-turtle cups.