From some link on Yahoo:
1. Potatoes (323% more satisfying than white bread)
2. Fish (225%)
3. Porridge/Oats/Oatmeal (209%)
4. Apples (197%) and Oranges (202%)
5. Wholewheat Pasta (188%)
6. Beef (176%)
7. Beans (168%)
8. Grapes (162%)
9. Wholemeal Bread (157%)
10. Popcorn (154%)

Popcorn?!