The boat sequence in WILLY WONKA AND THE CHOCOLATE FACTORY...eek, a chicken getting its head cut off!
Aforementioned SNOW WHITE and the forest.
And LITTLE HOUSE ON THE PRAIRIE. Yes, you heard me correctly. For a show that was so frequently about home-y, family, Christian values, that show went to some dark-ass places! There was one Halloween episode where Laura sees Mr. Olsen chop off a mannequinn's head with a fencing foil and she thinks he has murdered Mrs. Olsen. This sets Laura into a series of nightmares about chopped off heads that scared the bejesus out of me.
Later, there was an episode about dull old Albert falling for a new girl who was made fun of because she was "developed". She would get stalked and attacked, HALLOWEEN-style by a guy in a scary mask who would rape her. The stalker turns out to be her father. I remember the episode ending with her dying in Albert's arms. Ah, LITTLE HOUSE!
"Impossible is just a big word thrown around by small men who find it easier to live in the world they've been given than to explore the power they have to change it. Impossible is not a fact. It's an opinion. Impossible is not a declaration. It's a dare. Impossible is potential. Impossible is temporary. Impossible is nothing.”
~ Muhammad Ali