Who is Don Draper without sweat on his brow, a drink in his hand and a cloud of smoke surrounding his smoldering glare?
In fact, every character in Mad Men has their quirks. Over the years, we've all grown to love the many nuances of the personalities from Sterling Cooper & Partners, like Joan Harris' pen necklace and Roger Sterling's signature office cocktail.
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The final episodes of Mad Men may reveal even more intriguing idiosyncrasies about our favorite ad men and women. But you'll have to wait until next year for that.