Are television critics a menace to society? What do we do when our media tastemakers, the men and women entrusted to evaluate the artistic merit of Tinseltown offerings, exult in Hollywood's lack of taste? When perverse novelty and "edge" and complete moral confusion is what these critics live to watch and love to promote, they appear to be seeking to establish the polar opposite of a moral tone in our culture. Take as an example the critics' views on the new Showtime drama "Dexter." Its sickening premise makes a hero out of a sadistic serial killer, because he kills only...