SPOILER ALERT! DON'T READ THIS POST IF YOU HAVEN'T SEEN TONIGHT'S "MAD MEN" FINALE.... So the series comes to an end with loose ends tied up, and one cheekily waving in the wind (Don's). Joan's her own boss (go Joan). Peggy and Stan declare their love in a great phone call that ricochets like a rollercoaster. Sally shows her fierce maturity coming home to help her mom, as Betty - still smoking - awaits her fate to lung cancer. And Don, oh Don. Dick Whitman, Don Draper, whatever his name is to whoever at that moment, crumbles to tearful dust at what looks like a Big Sur counterculture retreat (Esalen??). His facade broken, his journey complete. After sobbing and bear-hugging a complete stranger in group therapy whose story in ways mirrors his own (one of the show's most real moments), he sits on a hilltop, the California sun glowing behind him, and smiles. That smile. Is he finally content? Is he staying on the bright hippie West Coast, "retired" from New York corporate advertising? Or does he have an idea, a great idea, a singular idea, the best of his career? The scene, and episode, transition from that smile to 1971's iconic hilltop Coke commercial "I'd Like to Buy the World A Coke." In real life, a McCann Erickson creative director for Coke, like Don, dreamt up that ad. Smartly, it's a loose end just that, loose, thought-provoking and up for interpretation. RIP "Mad Men," whose stylish clothes, characters and philosophical panache kept me watching every week.