Just listened to the "WTF" episode where Maron talked to the Sklar brothers and needled them endlessly about identical-twin stuff. The fact that there's no discernible difference between the Sklar's speaking voices didn't help. Reminded me of that Wurster call with Sean and Shane, the conjoined brothers. Or that other Wurster call with the father, son, and their talking dog who all sounded exactly the same.