This is something I think just about every American should look at. We live in such a "Bigger, Better, More" society... we have jumbo, extra large, super big sizes in our food portions... and it's not just at the fast food places asking for .65 to upsize your value meal.
Here is a really good way to make sure you're eating the correct portions.
First of all, to have a balanced meal, I try to use the visual of a divided plate (the kind you get at a picnic with half the plate sectioned off, and then the other two sections as fourths on top...) Half your plate should be veggies (salad, green beans, whatever) - one fourth should be your carbohydrate, and one fourth your meat.
Now with that said... here are what portions are SUPPOSED to be:
A Baseball - a serving of vegetables or fruit
A rounded handful - about one half cup cooked or raw veggies or cut fruit, a piece of fruit, or ½ cup of cooked rice or pasta
Deck of cards - a serving of meat, fish or poultry
Golf ball - one quarter cup of dried fruit or nuts
Tennis ball - about one half cup of ice cream
Computer mouse - about the size of a small baked potato
Compact disc - about the size of one serving of pancake or small waffle
Thumb tip - about one teaspoon of peanut butter
Six dice - a serving of cheese
Check book - a serving of fish (approximately 3 oz.)
Check out THIS portion distortion: