When asked to bring something to share at a dinner party I usually take some sort of fresh fruit. Fruit is the kind of food that can be served as an appetizer, salad or dessert. Taking a fruit dish is always a good idea, because it assures me there will be some food at the meal I know is healthful.
I was surprised to hear one of the other guests comment he avoids fruit because of what it does to his blood sugar. Since then, I found an article in a Food and Health Communications newsletter on this very topic written by Hollis Bass.