To reposition this thread next to SpaceCadet's, I'm adding a new post: the top 20 super foods from the July 2012 issue of Zoomer magazine (article by Ceri Marsh and Laura Keogh). The items aren't brain-specific, but it's still an interesting list - I've been eating many of these:

1. Mango
2. Applesauce
3. Natural nut butters
4. Whole grains
5. Popcorn
6. Greek yogurt
7. Goji berries
8. Salmon
9. Legumes (eg, chickpeas, black beans, lentils)
10. Kale
11. Sweet potatoes
12. Avocados
13. Blueberries
14. Flax
15. Dark chocolate
16. Quinoa
17. Oatmeal
18. Eggs
19. Chia
20. Water!