Everything starts out good. Greg loves little Kevin Holloway-Sterling-Harris. Joan's ever-annoying Mom, Gail, goes out to let the "two visit a spell." Aw?

Later though, a bologna sandwich gives Greg the strength to tell Joan that he -- surprise -- is going back to Vietnam. In 10 days. And stay for another year, even though the two had agreed that he would be home to stay after a year. It's his orders, he insists.

Oh, Greg. Turns out over a dinner with his parents and Joan and her mom, that Greg VOLUNTEERED to go back for a year without asking Joan. I know, I know. It's Vietnam and they need good surgeons, but no one plays Joan like that.

They fight, of course. And thankfully Joan is sticking up for herself and showing how bad of a decision-maker and unprepared for Joan-as-wife he is.

After a nap, she's made her decision. "I was thinking about it and I want you to go."

Greg thinks she means she's OK with him going back.

"No, I want you to go and never go back."

Hell yes, Joan. Finally. Greg goes on and on about how the Army needs him and makes himself out to be the good one in this situation.

Then comes one of the best Joan lines ever: "I'm glad the Army makes you feel like a man, because I'm sick of trying to do it." I don't know when I'll ever be able to use that line myself, but I'd like to at some point.

And later, another sure-to-be classic Joan line: "You're not a good man. You never were. Even before we were married, and you know what I'm talking about."

I think it's safe to say that all "Mad Men" fans (and, therefore, Joan fans), had been waiting for this moment since, you know, Greg raped her in Don's office in Season 2.

Anyone sad to see Greg and his many tight white shirts go? No. Cool. Me either.

Peggy adopts Dawn for the night: I'm a little confused as to where the writers are going this season with Peg. So far, she has been a bit of a nuisance (insulting Megan, acting generally uppity). This time around, she takes advantage of Roger forgetting to do the whole Mohawk Airlines campaign presentation and gets $400 from him to stay in the office all night and do it.

Later, she hears a noise, inspects and finds Dawn, Don's secretary, sleeping in her boss' office. With rumblings of race riots starting in NYC, she's afraid to go home, but Peggy offers to put her up in her apartment for the night.

I do not like drunk Peggy. She annoyingly name-drops her journalist boyfriend as covering the race riots to Chicago, as though that will make Dawn feel somuchbetter! She then whines on about being unhappy at work. "Do you think I act like a man? I try, but I don't know if I have it in me. I don't know if I want to."

Dawn starts to look for the exit, but decides to go to bed, even after Peggy says she understands Dawn's loneliness at the office because she was once the only woman working there. Note to Peggy: being a white woman in the 1960s workplace and being a black woman in the 1960s workplace are SORT of similar, but not really though.

After all of this Peggy pauses, looks at her purse lying on the coffee table and hesitants to leave it in front of Dawn. This was one of the finest moments of the episode, a showcase of inherent prejudice, even ever so slight. It was all made worse when Dawn leaves a note in the morning thanking Peggy for "the hospitality."

Nice bonding session, Peggy.

Valley of the Sallys: Finally, what's little Sally Draper up to? Having a hard time at home with Henry's mom, Pauline (Sally never calls her Grandma). As an odd plot point, the Richard Speck murders of eight student nurses hangs over this episode like a dark cloud (the timing means this is middle of July).

Pauline reads about the murders in front of Sally, who is naturally curious but told to shut up and eat her tuna sandwich (Henry and Betty are off somewhere ignoring their kids). Later, Sally finds a newspaper, reads the news and is scared.