Subpages: Awesome ComicStrip Film Fridge Funny Headscratchers Heartwarming Laconic Main NightmareFuel Series Trivia WMG WesternAnimation YMMV
Please don't list this on a work's page as a trope. Examples can go on the work's YMMV tab.
Nightmare Fuel:
Flash Gordon
The comic strip
A lot of what Queen Azura does to Flash; she brainwashes him continuously via a magic drug, which has the added effect of giving him nightmares.
The Filmation cartoon
Some of the animation for the monsters, as well as the monsters themselves.
The starving, emaciated prisoners in Ming's mines who are explicitly stated to be blind from radiation poisoning.
1980 film:
For as campy and entertaining as it is, the Memory Eraser scene is surprisingly intense.
The scene with the woodbeast, because of its suspense factor .
Some of the Aliens and Monsters (and their strange clothes) could qualify.
The scene with the Wood Beast is genuinely tense, especially after Barin performs a Mercy Kill on a young man (barely out of teenage) after he's bitten.
Klytus' death, complete with bulging eyes and tongue. Squick .