Really unbelievable this film is stated as horror/comedy here on IMDb. Braindead is horror/comedy. This is pure horror. If Kopfrkringl's sick mind doesn't scare you, nothing does. This is a holocaust movie. But unlike Pianist or Shindler's list this movie is about cremator. About man who finds idea of burning thousands of murdered people every day very attractive. Director Juraj Herz have done brilliant piece of work by creating atmosphere of fear and madness so deep and believable. Because in fact there had to be some Kopfrkringl who actually done these things during WW2. This movie flows like honey (or some Lynch's work) with no boring spots and no disturbances in its rhythm. One scene traverses into another almost seamlessly. And in the end you can see mass murderer who thinks he is dalailama and you'll believe it's possible. That's why Cremator is REAL horror.