David Bowie, 'Space Oddity' (Season 7, Episode 12)
As Mad Men wraps up, Don has all but ditched his real life — his job at SC&P, now absorbed by McCann; his wife, who got out of their relationship with $1 million; and even his children — in favor of some kind of soul-searching journey out west. His self-isolation parallels Bowie's Major Tom, who, at the end of the Thin White Duke's 1969 hit, has asked Ground Control to send a message to his wife and trusts his life to his spaceship. He's leaving the world as he knows it behind. So will we see a new beginning for Don, or will he simply float along in his own little tin can, far above the world? Only time — and the series finale — will tell.