The spaceship / cruise liner that the honeymoon couple are travelling in looks very Star Trek. Gene Roddenberry is probably wondering why he isn't getting a cut of the profits...
"Christmas is cancelled." Sounds serious.
And Rory's there. Is it Real Rory or Auton Rory, or is there really even a difference any more? I do notice that he's still in his Roman soldier outfit, and for some reason known only to herself Amy's back in her WPC kiss-o-gram outfit. (I still think Amy would have been better as a real police constable...)
All this big speech about the Winter solstice doesn't take into account that one whole hemisphere in the world in which Christmas occurs near the Summer solstice.
"How amazing. In nine hundred years of exploring time and space, I've never met anyone who wasn't important."
There has been a bit of quick discussion as to the identity of the actor playing Not Mr. Scrooge; after a short discussion it was assumed that said actor was Michael Gambon (and later confirmed by what little of the end credits was actually readable).
"Doctor. Please. Don't get distracted."
"Sorry about the picture quality. Found it on an old drive. Had to recover it with quantum (something or other) and a paper clip."
"If you're my babysitter, why are you climbing in the window?"
"Because climbing out would be the wrong direction."
"It's just a lot of wavy lines." And so the psychic paper is short-circuited. Let's hope this idea sticks. The sonic screwdriver is quite enough deux ex machina for one Time Lord.
Speaking of which: "When I get the sonic screwdriver back from the shark in your bedroom."
"THERE'S A SHARK IN MY BEDROOM?"
"SEVEN TWO FIVE EIGHT!" "Just what I was after. Thank you."
"Fish like singing, O.K.? Now shut up."
"When girls are crying, are you supposed to talk to them?" "... I have no idea."
"Guys, we've got to get going. I've just... accidentally... got engaged to Marilyn Monroe."
"A ghost? Dressed like that?"
And this is probably the first time I've seen the sonic screwdriver used as a microphone. A comment has been made that it needs a wind sock.