The Repeated Meme: Let's Kiss Hitler

Idea Proposed and Not Used during the New Series: Russell T. Davies famously suggested that Hitler would make a good Doctor. Evidently the current production team decided to have some fun with that.

Central Premise Recycled From: Not really so much recycling this week so much as retconning-- tying up a lot of loose ends from explaining why the Ninth Doctor regenerated when he did, to how it is that River Song is both a mortal archaeologist and an immortal regenerating time-traveler.

Reference to Moffat's Back Catalogue: River Song's backstory is now all sewn up. Plus we get a trio of Moffat Moppets (and a virtual one), a lovesick boy who reckons he'll never get the girl, [fill in the blank] lipstick, and getting the Doctor's attention through creating a crop circle he'll read about later (sort of like the Doctor's getting Amy and Rory's attention in "The Impossible Astronaut").

Amy Screws Up the day with Wuv: Amy wuvs her best friend, and effectively raises her best friend, and she grows up to be, well, River Song. I blame the parents.

Joss Whedon Called...: He wants his snappy montages of explanatory flashbacks back.

And from Lawrence Miles: Drawing a blank this week I'm afraid.

Murray Goldwatch: Not quite so bad this episode, though Pachelbel's Canon has to be a pretty damn banal choice for the restaurant.

Nostalgia UK: World War II, crop circles.

Inside Jokes: Why did the Titanic sink again?

Teeth! Not so much.

Hats! Toppers are cool.

Fish! No, unless I really stretch the metaphor and assume that at least one of the people eating in the classy restaurant is having the sole meuniere.

Small Child! Three real small children (in the flashbacks of Amy, Rory and Mels) and a virtual one (the Tardis' visual interface of little Amelia).

Item Most Likely to Wind Up as a Toy: No monsters that we haven't seen before this week, so let's get creative! I'd love a little Hitler action figure, wouldn't you? Or the Amy and Rory pull-back action motorbike. And this episode just completely reinforces my call for a Bionic Woman-style River Song with a range of dress-her-up outfits and accessories.