"Some things never change." And some things do. This week's fantastic episode of Mad Men ("At the Codfish Ball"), written by Jonathan Igla and directed by Michael Uppendahl, had its eye on the future, with several characters contemplating the shifting mores of 1966 as they--and the viewers--were confronted by traditional values rubbing against modernity. But, as the episode itself depicts, things do change and they have to. Society may march on with some of those rigid structures intact but with it comes progress as well, and the sense of change and of the future is embodied in the characters of Peggy (Elisabeth Moss), Megan (Jessica Paré), and Sally Draper (Kiernan Shipka) here, each of whom undergoes a transformation of sorts (whether physical, psychological, or social) before the installment ends. The entire notion of the campaign envisioned by Megan toys with the notion that certain things never really change, whether it be spaghetti, beans, or a mo...