I’m very late to the a-ha moments here, but I finally looked up all 3 Mad Men actors who have been bugging me with their familiarity. Elisabeth Moss (Peggy) I figured out early on as being Bartlet’s daughter, Zoey, from West Wing. The other two I kicked myself for not remembering. Vincent Kartheiser (Pete) was Connor, Angel’s son. Christina Hendricks (Joan) was on Firefly as the elusive and oft-married con-artist “Saffron.”