Person of the Century? GUESTS: TBA With the year 2000 approaching, Santa Claus isn't the only one making lists this December. Everyone seems to be evaluating the century, and cataloging bests and worsts, things important and overlooked. Join Katherine Lanpher and guests to share YOUR input on a question that's sure to stir controversy-- who do YOU think is the most important person of the Twentieth Century? That's on the next Talk of the Nation, from NPR News.