If Ronald Reagan were still in his prime, presidential 1980s form, he’d be saying to Hollywood: "There you go again." There are two kinds of films about presidents. There are documentaries which usually try to dwell in factual examination; and fictional movies which have a habit of wildly making things up to satisfy the demands of making either effective entertainment, or effective propaganda. Now CBS is preparing a dramatic and quite fictional miniseries for November titled "The Reagans." CBS promised reporters it would be "meticulously researched." Researched fiction, that is. The last Reagan-fictionalizing offender was Showtime, whose 2001 film on...