Shower scene
Were the bizarre bird calls during this scene a sort of homage to the shower scene in Alfred Hitchcock's Pyscho? I know that would be a really obscure reference, but I was watching this movie for the second time, nearly a year after my original viewing of the film, and I just kind of thought about how oddly out of place those noises were in that scene. And I know that Van Sant directed a remake of Psycho in the 90's, so the idea dawned on me.
The scene can be viewed here: http://www.youtube.com/watch?v=Co_PvY4TNf0&feature=related
Also if you watch the scene again, from about 1:40 to 1:56, the actor's head is sliding down the wall with his hair sort of parting againist it (I'm not sure how else to describe it) similar to Janet Leigh's in the Psycho shower scene.
"I have the heart of a small boy... Which I keep in a jar on my desk."-Robert Bloch