Sallllyyyyy....
I remember watching the end of this movie on tv at my grandmother's when I was little and it scared the hell out of me. All I remember is the creepy whispering chants: "SSssalllyyyyy..."
Once in a blue moon, I think of this scene and it still scares me, but up until today, I couldn't figure out what movie it was. Thanks to the trailer for the 2011 remake, I made the connection!
I have a feeling I'd laugh at the 1973 version now, so I'm going to let sleeping dogs lie.