Rugby football, via television, has brought to the world an ancient and aggressive form of South Pacific dancing, not the beautiful girls in hula skirts with leis around their necks to welcome American sailors in search of rest and recreation, as Technicolor movies told the world was how dancing was done in the islands. The four Pacific Island teams at the Rugby World Cup have shown off dances of a different kind to the world, the best moments of prematch drama. It was a moment of gripping drama as the All Blacks performed their Haka, now stylised and theatrical, and...