Artichoke hearts. I chop them in the food processor, and add a little mayonnaise and/or sour cream to make a dip that I serve on top of salmon or tomato slices.
Also, baby cucumbers as a snack vegetable in packed lunches. We get different varieties of these in our Hispanic market, but I think most people just think of cucumbers as salad food. I have had people do a double take when they see me eat a whole one, as is.