Childhood nightmare fuel productions?

[Trevor]

The champ for me is the South African film DIRKIE aka LOST IN THE DESERT (1969).

Once seen, never forgotten. 😳😳

[M.10rda]

POLTERGEIST, I'm sure, though that's an obvious one.

I had a nightmare about the trailer for COMPANY OF WOLVES when it aired on US tv.

LEGEND 0F B0GGY and CREATURE FROM BLACK LAKE, probably (or else I was already inclined towards nightmares about Bigfoot).

Just the synopsis of HILLS HAVE ETES disturbed me/scared me for much of my childhood. The film, watched in adulthood, couldn't live up to my imagination.