I liked the episode a lot. It's even reasonably faithful to "A Scandal in Bohemia," with Holmes disguising himself as a cleric and using a fire to, er, smoke out the location of the item. I do have a problem, though. The episode takes place over the course of an entire year, and you're telling me that intelligence knew of a terrorist threat to a specific flight that far in advance. Mycroft was already gathering bodies during the summer, and he authorizes Bond Air right after Sherlock's first encounter with Irene. Sherlock finally got the phone at Christmas and had it for six months after that. The email had to have been on the phone for at least that long. That's awfully far in advance for a plane manifest. It didn't detract from my first watching. I only started thinking about it on rewatch.
"The Geek Interpreter" may be the best pun based on a canon title ever. "The Speckled Blonde" was pushing it.
Holmes has a Clue (or probably Cluedo) board affixed to the wall with a knife, right above the skull on the mantle.
There's also the painted yellow happy face on the opposite wall that constantly made me think of Red John's signature in The Mentalist.
Yes, punch me in the face. Didn't you hear me?
I always hear 'Punch me in the face,' when you're speaking, but it's usually subtext.
You ought to remember Sherlock, I was a soldier. I killed people.
You were a doctor.
I had bad days.
We should call the police.
Yes. [fires gun several times into the air] On their way...
Hamish, if you're thinking of baby names.
I would have you right here on this desk until you begged for mercy twice.
I've never begged for mercy in my life.
That last reminded me very much of Fuffy's (or was it Baith's) champagne speech to Spike.