"Nightmares in Red, White, and Blue"

Lance Henriksen's deep, creepy, and raspy voice narrates this documentary, "Nightmares in Red, White, and Blue: The Evolution of the American Horror Film". Interviews with filmmakers like Roger Corman, John Carpenter, George Romero, and more, talk about how their films and those of others were shaped by the times they lived in and the influenced of other filmmakers.

There is a very funny scene where George Romero is discussing "The Thing from Another World," and he points out that doors are constantly being opened throughout the film, so there's a montage of doors opening and closing.

Documentaries about this kind of subject can never be long enough or dig deep enough to be completely satisfying, but it may be the best I've seen in a while.