An awesome observation about the episode: you know how Madame Vastra and Jenny are supposed to be Arthur Conan Doyle's inspiration for Sherlock Holmes? Turns out what happens in The Crimson Horror is obliquely referenced to in a Sherlock Holmes story:[Spoiler (click to open)]From the 1st paragraph of The Adventure of the Golden Pince-Nez: "I see my notes upon the repulsive story of the red leech".LOL Mark Gatiss, good on you.
Steven Moffat explains in Doctor Who Magazine a plot point from Angels Take Manhattan: how a certain giant one was seen by no one
Last episode of David Tennant's The Politician's Husband tonight at 9pm BBC2. He's recently won a Behind The Voice Actors award for his guest performance as Huyang on Star Wars: The Clone Wars, and has been nominated for an Emmy for it as well.
An issue of The Avengers comic included characters with the likenesses of the Tenth Doctor, Rose, Captain Jack and Mickey.
Sadly, episodes 1 and 2 of Bernard Who? has been taken off the iPlayer. This David Tennant fansite has a couple of mp3s of him and Russell T Davies talking about Bernard Cribbins.