Watching that last night has convinced me I really have to attempt to sit through all of Texas Chainsaw Massacre...there's something about the way that movie is filmed, it just disturbs me like no other film ever has. Just the sense of helplessness and absolutely inane, pyschotic madness that pervades throughout it - and as was mentioned in the program, the sound design is terrifying.
Disappointed that Gatiss chose to completely overlook modern horror. The first Saw film (and ONLY the first), Scream, Nightmare on Elm Street, and more recently Paranormal Activity and Drag Me To Hell, are all excellently made horror films. The criticism of identikit slashers/torture porn was justified, but I was disappointed he chose to go with the old-man view of "everything was better in my day".