Yes, there’s a real reason to watch tonight’s episode of The Masked Singer. This season already has upped its watchability quotient by unmasking, as one of its contestants, Paul Shaffer (a.k.a. the Skeleton, pictured). And tonight, its guest judge is another entertaining old dog: specifically, Triumph the Insult Comic Dog. Robert Smigel, who voices and operates the caustic canine hand puppet, is likely to make Simon Cowell of American Idol, by comparison, seem lik