This is the first ear I picked:
You may have noticed that I said 8 plants. The Golden Rule of Corn planting is that you should have at least a 4x4 foot area planted in solid corn. That's about 16 plants spaced 12" apart. This is so that there is enough pollen present to pollinate the silks. Planting only one long row is said to result in low pollination. Imagine if the predominate wind direction is perpendicular to the row...little to no pollen will fall on the silks.
For some reason, I thought that this rule really didn't apply to me and my corn. I planted 2 rows of 4 plants each. I would have planted more, but tomatoes were dominating the garden this year, so space was at a premium. As it turns out, several ears looked like this: