Tom Shales: Every now and then something works, things go right and high spirits don’t have to be faked. Even on television. Even on NBC. The poor old network with all the bruises from months of battering is enjoying a fine, high-flying triumph with its HD telecasts of the Winter Olympics from Vancouver. WSJ: With an estimated 185 million unique viewers over a 17-day period, the Olympic Games provide a special audience microcosm, and one that NBC believes will be particularly useful for measuring new-media consumption habits and trends. USAT: NBC is doing its Olympic best with what it has.