Movies that messed you up cause you watched it when you were too young

The My Buddy - Chucky post got my nostalgia brain going and I wanted to ask what movie fucked you up because you were too young to see it. Mine was catching one of the Night of the Living Dead on USA Network during the daytime when I was around eight or nine. The image of a half zombie strapped down to a morgue table with its spine wriggling like a worm left an indelible mark on my psyche lol.