A History of Horror.
Even though the two episodes that were shown didn't say anything new about the genre, I thought it was good beginners guide to horror for the uninitiated.
However I was disappointed that Gatiss made Hammer out to be just churning out Frankenstein and Dracula, amongst a few other things, when in fact they did more than that during the 60s and 70s, for example:
One Million BC, When Dinosaurs Ruled the Earth, Paranoiac, Scream of Fear, The Abominable Snowman, The Mummy, Two Faces of Dr. Jekyll, Nightmare, Captain Clegg (aka Night Creatures), The Phantom of the Opera, The Gorgon, Kiss of the Vampire, The Nanny, She, Rasputin the Mad Monk, The Witches, The Anniversary, The Devil Rides Out (shockingly not mentioned), Hands of the Ripper, Fear of the Night, Straight on till Morning, etc. All on DVD, with Vampire Circus coming out on R1 dvd/blu ray combo in December.
Same with Amicus apart from Dr. Terror's House of Horror, and Tales from the Crypt, they also did Dr. Who and the Daleks/Daleks - Invasion Earth 2150 AD
The Skull, Torture Garden, The House That Dripped Blood, I, Monster, And Now the Screaming Starts! Vault of Horror, The Beast Must Die, Madhouse, The Land That Time Forgot, At the Earth's Core, The People That Time Forgot, which like Hammer are all on dvd.
As with Tigon, The Sorcerers, Curse of the Crimson Altar, The Blood Beast Terror, Doomwatch, Virgin Witch, The Creeping Flesh. They did a few more horror films but they were awful.
I was surprised that Peter Walker didn't even get a mention, but I wonder if he will get a mention in the 70s American horror episode?