Ya gotta love those Yahoo Tips:

Weight Loss Appetizer. Eat any filling, low-calorie food as an appetizer or first course, and you'll be less likely to overload on calories at that meal. For example, eat an apple on the way to lunch, or order melon as a first course. More tips: Start with a salad with just a little low-cal dressing; when you go to the salad bar, fill up your plate with "big" foods like greens and colorful vegetables before you consider any calorically dense choices. It's a kind of preemptive eating strategy. Find the filling, low-calorie foods you like, ones that you'll turn to easily.