re: What are the most chilling words ever uttered in a horror movie?

I always liked the scene in The Ring where Naomi Watts character thinks she did a good thing by freeing Samara and her son freaks out. It isn't the scariest movie, but the transition from happy to frightened is really effective.

Aidan Keller: What happened to the girl?

Rachel Keller: Samara?

Aidan Keller: Is that her name?

Rachel Keller: Mm-hmm.

Aidan Keller: Is she still in the dark place?

Rachel Keller: No. We set her free.

Aidan Keller: You helped her?

Rachel Keller: Yeah.

Aidan Keller: Why did you do that?

Rachel Keller: What's wrong, honey?

Aidan Keller: You weren't supposed to help her.