All Around the YearWhether they're decorating Easter trees or celebrating Wagner's birthday by playing recordings of his Ring cycle operas and incinerating a model of Valhalla on an outdoor barbecue to the closing strains of "Gotterdmerung," Americans know both how to create and how to celebrate holidays. Jack Santino's guide to such frivolity is a wonderfully readable exploration of holidays, periods of festivity, and life cycle rituals and celebrations. Santino draws