I thought "Tomorrow Never Knows" was a great choice for the Beatles song Don listens to at the end. Nodded back to the LSD theme of an earlier episode, Megan's observation that music is always changing, looking into the void of the elevator shaft, the changing circumstances of his life. Amusing in that they were looking for a Beatles-like song for an ad, and that tune is un-Beatles-like even for the Beatles. Perfect attention to detail in that Revolver came out exactly when this season is set. Don clearly doesn't know what to make of it - and the Lucy/Desi repartee shtick for Cool Whip fell flat. Wonder if they're setting Don up for a serious professional set-back. They seem to keep suggesting that he's out of touch.