Duck comes in to tell Don that they got the Martinson account, and they congratulate each other's work in a sincerely warm manner. The mood is ruined, however, when Jane comes in and tells Don that Bertram wants to speak with him -- just him. Everyone tries to ignore the awkward, but after Don leaves, Jane has the presence of mind not to leave Duck alone with Don's rye. She must have watched last week's episode.
Don enters Bertram's office, shoes already off, to find Roger and Bertram awaiting him. In answer to Bertram's congratulations, Don tries to tell him his success wasn't all due to him. Bertram: "Fascinating." I do not think that word means what he thinks it means. Roger tells Don that Jim van Dyke was so impressed with Don that he's inviting him to join the board of the Museum of Early American Folk Arts. Don actually manages to come up with a reaction more enthusiastic than "...", which is more than I'd expect of him or, for that matter, anyone. Roger goes on that the museum doesn't actually exist yet, but Bertram chimes in that he's seen the opening exhibit. "Whirligigs." Heh. The bosses get to the point right about now, which is that they need Don not only to continue being as brilliant as he is at Creative, but also to start becoming more of a face of SC -- as Bertram puts it, "You're going to be wearing your tuxedo a lot more." So everyone's a winner, then. Don seems happy enough with this development, but then Bertram dismisses Roger to ask if Don would agree that he knows a little bit about him. Don, not wanting to spend excessive thought on a memory involving Pete, concedes that Bertram knows something. Bertram isn't interested in dredging up anything, though, instead telling Don, basically, that there are few people in this world who really call the shots, and he's been invited to join their ranks. "Pull back the curtain, and take your seat."
And that's just what Don does, as he's back in the Cadillac showroom, sitting in the Coupe, and without even taking it for a drive, he tells the salesman he'd like to buy it. Don, at least negotiate with him. I bet he'll give you rustproofing and an extended warranty for free.