wank and i were reading the seattle times that for some reason gets sent here.
in it, it had a little blurb on how "doh" has been made a recent new entry to the Oxford English Dictionary.
Doh - expressing frustration at the realization that things have turned out badly as planned or that one has just said or done something foolish. Also implying that another person has said or some something foolish.

other new entries are cyberporn and mullet =)