What is the film's best scene?
The whole movie is filled with fantastic moments beyond count, but the scene that made me realize I was watching a great horror classic was the scene where while the Caroller's are at the door, Billy creeps into Barb's room and whispers those horrifying lines to her. And then he begins to stab her, (but not before the camera briefly cuts, giving us perhaps the best glimpse at the movie's killer we ever get). The scene is beautifully edited. The cutting back between the innocent children singing and then to Barb being stabbed by Billy is so indescribably brilliant, I almost have no words for it.
And it's scary to boot because Barb is already so weak from her asthma attack, she can't defend herself at all. So you can really feel her helplessness in the scene, being killed but not being able to do anything about it. And then having Jess clap at the end just ends the scene perfectly because that's exactly what I wanted to do when it was over. What an amazing blend of peaceful serenity and cold blooded anarchy. Such an amazingly well done scene.