io9 has compiled a list of the most (perhaps unintentionally) terrifying scenes from our favorite children’s movies. I recognized every scene and can confirm that they are all terrifying; I had forgotten how terrifying.
However, I think they’re doing a disservice by only covering older movies. Today’s kid’s movies are chock-full of scariness. Off the top of my head, I still get nightmares from Matilda, Charlie and the Chocolate Factory, Alice in Wonderland, and Coraline.