More than a decade into a career whose opening salvo was the chart-topping "Austin," that transparency has helped Blake Shelton become one of the best ambassadors the country music genre has ever had, in a league with Glen Campbell and Roger Miller. His wit, intelligence and, above all, his irreverent sense of fun have endeared him to his peers on NBC's megahit "The Voice" just as surely as it has to the millions of fans he is introducing to country music. He is, says wife Miranda Lambert, "the life of every party he goes to," and these days, the world is his party.