I thought one of the Children tried to stab a White Walker with a conventional weapon and got killed, but I will re-watch tonight and confirm.

I don't think Littlefinger feels anything but guilt about what happened. He did say that Ramsay was an unknown quantity:
Ramsay: She really is lovely. I hope I can make her happy.
LF: I hope so too. I've become quite fond of Lady Sansa during our travels together. She suffered enough.
Ramsay: I'll never hurt her. You…

Dear Old Nan,

But there might be a "good reason" for Summer getting swarmed and dying. If Bran sees blue-eyed wight Summer and is on the verge of getting eaten by his former direwolf, there is an opportunity for Bran to realize that he can warg into and control Summer, causing Bran to realize that he can warg into and control…

That was brutal. Hodor and Summer dead in the same episode?!?
That, just… horror.
Another White Walker dead, though. Why didn't the little elves with the Molotov balls know that dragonglass kills those icy assh0les?

Tormund: That was a night to remember. Of course, I'd had a good bit to drink. (chuckles) Her fangs were sharp, but she knew how to use them. And she was nice and soft down below. No, she was no ordinary beast. Many is the man who…

Ygritte: I know you never fucked a bear. You know you never fucked a bear. Right now I don't want to think about the bear you never fucked. Right now all I want to think about is each one of these arrows finding its way into a Crow's heart.

I hope Tormund doesn't try to tell Brienne about Sheila, the bear he fvcked.

Burning Man didn't go quite the way the members of Khal Kamp were hoping.

It is a testament to the genius of this show that it makes me care about these characters so much.
The building realization that Stark Shall Not Meet Stark might not be an actual law of Westeros, and that Sansa was going to be safe for one night, perhaps for the first time since Ned was thrown in a Black Cell had me…

What was up with Arthur Dayne saying "I wish you good fortune in the wars to come," the exact same thing that Mance said last season?

Balon's brother said that his ship is feared "from Oldtown to Qarth". Take that, flat eartheros-ers!

The Karstark's have shown a willingness to kill innocent relatives of their enemies for "revenge", and Ramsay is… Ramsay, so "really unpleasant" is quite the understatement!

Seeing the Targaryen crest on Dayne's armor had my eyes bugging out of my head, then they pull back and he is dressed (essentially) like a Kingsguard, and I was like Whaaaa?

S05E05 "Kill The Boy"
Jon: (addressing the Night's Watch) You were at the Fist of the First Men. If we abandon them, you know what they become. We can learn to live with the Wildlings or we can add them to the army of the dead. Whatever they are now, they're better than that.

Gilly was totally enjoying being in a terrifying storm in a leaky boat.
Only thing that would have made it better would have been a shot of Gendry rowing by.

In the crowd shot just before the bulk hanging, I did note a redheaded Wildling girl. One of the few things JS knows is the location of the Steamy Love Cave, so…

I took some solace in the fact that this direwolf death was off-screen, but yeah. That sucked.
I wish they had tossed off a "he took down 10 of my best men" line from Aishole Umber to make me think that this wolf went down like a champ.

And one of the knights he fought (loved the armor BTW) was Arthur Dayne. Callback to this from Joffrey (speaking to his DaddyUncle Jaime)…
"So this is the famous 'Book of Brothers'? All the great deeds of all thegreat Kingsguard… Ser Arthur Dayne. The Sword of the Morning. Led the attack on the Kingswood Brotherhood.…

I did catch two changes to the map.
The first was the reintroduction of Vars Dothrak, as someone else probably mentioned (can't scroll through all the comments on my phone).
The second change is probably something I hadn't noticed before. The Winterfell castle has the Bolton Flayed Man icon on the round spinning bit,…