According to Alan (who knows these things), the Doctor will be re-generating next series, and that means we'll have to say good-bye to David Tennant, the greatest time lord the world has ever known. Quite frankly, I can't bear to think about it... This, along with the fact that there are just two series left of Lost, is more than I can cope with. It is a sad, sad day for Doctor Who fans. I just don't see how time spent in the Tardis will ever be quite as much fun again. SIGH.