Loved that, a great mix of satisfying closure and open-ended conclusion. Ending can be taken as literally meaning Don came up with the Coke ad idea (which as has been repeated on Twitter endlessly this morning changed the ad industry forever) and it can be taken as a message that work and life are entwined, not separate entities and happiness doesn't lie with either one. The message of wanting to buy someone a coke is capitalism and advertising at work but the ad has an optimistic, positive outlook. Wanting to buy someone a coke is a nice gesture, even if its an advert telling you to do it.
Who the hell would have guessed Mad Men would end with Don doing yoga and Joan doing cocaine?
Some will probably see the Peggy/Stan thing as too soapy for a show that's usually short of that kind of thing, but they're a great pair. I can both buy into them as a couple and think the show has earned that kind of saccharine moment. "There's more to life than work", he said, but happiness can be found anywhere and different people find their own balance. Joan seemed happy with hers, Peggy found love at work, Don's crisis eventually saw him "retire" but could have seem him return to deliver his career-defining pitch.
The best scene was between Don and Betty. It was devastating, first her line "I just want things to be normal, and that means you not being around" then three words that brought the tears.
"Birdy..."
"I know."