Mo Rocca meets retired teacher and Fishkill, N.Y., resident Mary Gray and her three dearest friends -- Lillian, Frances and Estelle. The four widows lean on each other for everything and they love to laugh, so family and friends dub them "The Golden Girls." Mary was born in America, but she is of Polish decent, so she teaches Mo how to make multiple varieties of scrumptious pierogi -- some are savory and filled with sauerkraut or meat and some are sweet and filled with blueberries. The episode may or may not end with a polka.