How do 200 calories look like?

Just returned from a brief holiday and had gained 2-3 pounds. My cousin was on a weight reducing program and the talk back home was at most times on calories, food, weight, metabolism, etc. Some of the interesting facts that came out of her program are listed below

• It takes 7500 calories of food to increase your weight by 1 kilogram
• Weight reduction programs do not cause a smooth decrease in weight. Weight reduction happens in cascade mode with sudden dips followed by plateaus and dips again.
• The thyroid gland is the organ that regulates body metabolism and hence the weight of the body.

Here's an interesting link I stumbled upon. It shows food stuffs and amounts of each that carry 200 calories.