Here's a thing: from the day the century turned until the day before last, I never heard a single other person refer to this century as anything other than 'two thousand and [insert number of relevant year here]'. This year was called 'two thousand and six', the 9/11 year was called 'two thousand and one', future projections were made for 'two thousand and thirty'.
Then, the other day, I heard two completely different people in two completely different contexts say it, erm, differently. One was forecasting figures for 'twenty-ten'. Another was referring to some date last year as 'twenty-oh-five'.
Have there been other sightings? I'm not objecting to it or anything; it seems quite logical. We say 'ten sixty-six', not 'a thousand and sixty-six', after all. But two people in one day, suddenly? Is it a viral thing? Something in the water?