Hi JimB ---

>Two digit years are blatantly incorrect and misleading.

Not at all. Dave makes a good point; users will be sick and tired of entering "2000" and "2001" when, to them, the century is obvious. It's a psychological issue.

>There is NO REQUIREMENT that a user type all four digits, but showing them less than the actual year, which BTW is 1999 is an unforgiveable error.

If you probably recall, a major refactoring method is counting keystrokes. Adding a century ALL the time adds two keystrokes to an input field. In most apps, the century ambiguity will be resolved in context; in those cases, 4 digit input years are overkill and a hallmark of a "dumb" application.