Fictional Mary worked at a television station in Minneapolis even she knew was second rate. Yet it was also so beyond how she imagined her future unfolding that she embraced it with a mixture of gusto and relatable fear. So many of us were in that predicament in the 1970s, jarred out of what was supposed to be our future by the revolutions of the 1960s. Americans identified with Mary far more personally than most previous characters. As someone who studies sitcoms, I could explain to you the structural set-up that facilitated that bonding, but the outcome is what’s more relevant here: that Americans regarded fictional Minnesotan Mary Richards as a real person. They sent letters to the Minneapolis post office addressed to her and made so many pilgrimages to knock on the door of the house featured in the opening credits that they exhausted and angered the actual owners of the house. Real people showed up in the series playing themselves, including first lady Betty Ford, who loved Mary as much as the rest of us.