12 Unanswered Questions From Famous TV Shows That Are Still Killing Us

10. Did Don Really Achieve Enlightenment? - Mad Men

Mad Men's final episode gave troubled ad maestro Don Draper (Jon Hamm) a deliciously ambiguous ending, leaving him meditating at a hippie commune as he appears to have found some measure of inner peace if not flat-out enlightenment.

But given the implication of the show's final smash cut to the legendary 1971 "Hilltop" Coca-Cola commercial, did Don's closing smile actually mean something else?

Mad Men creator Matthew Weiner has since confirmed that, yes, Don did indeed create the famous commercial, and an understandably cynical reading of the ending would suggest that Don only smiled because he had realised how to exploit the commune to market Coke.

A more optimistic reading would be that Don's smile is him genuinely finding enlightenment, and this simply inspired him to create an earnest commercial for the soft drink product.

Though the uncertainty regarding Don's mental state is perhaps a little frustrating, it's also a pretty genius stab at the now-famous "Sopranos ending", by immortalising Don in advertising history yet not quite giving him a concrete "happy" ending.