Gremlins 2 was another movie that disturbed me. I remember being infatuated with the movie, but also very put off by it. The spider scene in particular sticks out to me.
Also, throwing up. I remember being in EBgames at the mall (before it merged with gamestop) and there was this girl there that threw up all over the floor. I don't know why but I was so traumatized by that for a few days.
EDIT:
Also, the episode of Rugrats where Angelica gets a brother. Theres a scene where she hides in the closet, and he walks by. And then he comes back and opens the door. That episode always freaked me out.
Also, The Goosebumps movie where that girl puts on a mask for Halloween, and the mask takes over her body. So fukked up!!!!