Robert Morse was a window washer, Christina Hendricks traveled to Barcelona as a dippy flight attendant, and Jon Hamm killed William McKinley — not in real life, of course, but on stage. In fact, almost all of the principal cast members on the hit AMC drama Mad Men, past and present, have stage roots. So, in honor of tonight's season premiere, take a look at your favorite Mad Men stars doing live theater, proving they're more than just chain smokers and martini drinkers.