Just to clear up one small point from some of the above posts, see the following:
aught also ought (ôt) noun
1.A cipher; zero.
[From an aught, alteration of a naught. See naught.]
Excerpted from The American Heritage® Dictionary of the English Language, Third Edition © 1996 by Houghton Mifflin Company. Electronic version licensed from INSO Corporation; further reproduction and distribution in accordance with the Copyright Law of the United States. All rights reserved.
If you've ever watched the Beverly Hillbillies, Jethro used aught or naught quite often. And at the beginning of the 20th century, I believe it was very common to refer to the years as aught one, aught two, aught three, etc. Anyway, you get the idea.
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