Last week, 24 million people watched the first round of auditions and tonight promises even more "amazing" auditions as Sharon, Piers, Hoff and "the toughest audience in the world" mine La-La Land, the Big Apple and the Windy City for talent. First stop is LA - but before the "talent", we have to introduce the judges. Piers says he's looking for "a winner to join the greatest legends in entertainment history." Pretty lofty ambition there, Piers....