My friend Andrew over at Jobacle.com has a post up on dietary tips for jumpstarting your brain. They include avoiding sugar and assorted allergens (peanuts, wheat, dairy...), but also a few more off the wall ideas like "vinpocetine", something I've never heard of.
The most important thing for me is to eat something, and I agree, sugar isn't it. I tend to lean toward a simple egg and cheese, which I see is in Andrew's "foods that feed your brain" list.
What do you eat in the morning? Maybe I should make that the next poll.