While Jon Hamm's Don Draper is the undisputed lead, the troubled and mysterious ad man with a dark past and present day jawline that delivers as many messages as his mouth, the show relies almost as much on its female scene-stealer, Joan Holloway, played by the irreplaceable Christina Hendricks.
"When we did the pilot, that was not something that we discussed as a trait for Joan," she told Parade Magazine. "This is something that's developed as a combination of the costuming on the show, the hair and makeup, my portrayal of the role, and [showrunner] Matt's [Weiner] writing. It all kind of came together and that became much more of a focus later. It was just something the audience brought attention to."