I live on the edge of the suburbs, and ride into the country on my way to work. I usually leave at about 6am and arrive by about 6:30 (8mile commute one way)
This morning I ate a Cliff Bar about 15-20m before I left with a couple glasses of water. Once I got to work I had a bowl of oatmeal, and some more water.

Bananas before and/or after the ride are a personal favorite of mine as well.