I've been rooting for three years for a slow, agonizing arc that ends in Jim and Pam's divorce.

I do not have a problem with the "dynamic" between Don and Megan. But I do think we need to see way more of her away from Don – with colleagues in the office, with friends outside of the office, going about her routine in the way we "lived with" with Betty over the first three seasons – because I still have no idea…

@thebadhatharry:disqus  …and spent the rest of his life trying to explain why he always gets aroused during a movie with no women in it.

How old is Kiernan Shipka (Sally) in the car scene? Could it have been shot during season four for future reference?

Not just called "girl" by a client, but apparently still thought of as "a little girl" by at least one of her bosses.

Hats will be tossed.

I don't know what you're all talking about. Don was whistling the well-known hit "I Wanna Load Your Van."

No, the secretary, Ida "Hellcat" Blankenship. Was that wrong?

I was with you at the end of season four, when literally every facet of Sterling's life – his role in the business (Lucky Strike), his rekindled relationship with Joan, his marriage, his basic sense of self-worth (the pending failure of Sterling's Gold) – is in shambles. He actually tells Joan he's going to kill…

Yes, like an address tag on a dog collar.

God, I hope not.

I thought so, too – vodka or gin. But the liquid in that bottle was definitely brown.

I thought this, too, and actually looked up Timothy Leary to see if it made any sense at all for him to be at a small party in New York in the summer of 1966. He was facing a serious jail sentence in at least one drug possession case at that time (he took the rap for marijuana found in his daughter's underwear on a…

I don't think the show has fleshed out her job performance at all, either way. In fact, considering how central she now is to the show's universe, Megan remains a cipher relative to the other major characters. (Who, to be fair, we've known a lot longer.) There's no evidence that she's good or bad at work, only that…

Hat tip to @Garrison, who correctly called Ginsberg as a Holocaust survivor a couple weeks back. He was actually BORN in a concentration camp, which – while straining logic, considering Nazis routinely murdered babies who somehow didn't die of hunger/disease/neglect – actually makes him a little younger in 1966 than…

Another example of the richness of this show: A week after an engrossing episode devoted wholly to Pete Campbell and Lane Pryce, another engrossing episode with nary a sight of either of them. (OK, Pete had two lines. Also absent this week: Joan, Harry Crane and Betty Draper-Francis, for essentially the third week in…

"It's the beans that brought them together, in that cool night in the summer."

As someone who loves the Beach Boys but knows virtually nothing about dropping acid, "Pet Sounds" definitely sticks out in my mind as the most quintessentially LSD-friendly album ever made. "Hold On to Your Ego" and all that.

As much as I enjoyed Roger's acid trip – all scotch from here forward will be orchestral scotch – I think I'd much rather see Peggy turn on, preferably during Ginsburg's speech about being a Martian. If nothing else, the subsequent dialogue for the talking bean campaign would be AMAZING.

I'd be interested to know how/why the show settled on the serial day-in-the-life structure for this episode, when it could have easily intercut the threads in a standard linear narrative without the backtracking. Not that it's a big deal – this episode had me at "Roger Sterling drops acid" – but it struck me as…