If a child can watch Barney, can't that same child also enjoy watching Charlie Chaplin or the Marx Brothers? And as they get older, wouldn't they grow to like screwball comedies (His Girl Friday), women's weepies (Imitation of Life), and westerns (The Searchers)? The answer is that they'll follow because they'll have learned that "old" does not necessarily mean "next channel, please."Here is an impassioned and eminently...