This is how a soundtrack should be done. Trent Reznor is an amazing artist. Listen to the blu-ray HD Audio soundtrack of The Social Network by Trent and Atticus Ross through a good stereo, and it will blow your mind.
As for the Natural Born Killers soundtrack, the samples of dialogue used throughout work amazingly well with his choice of songs. There are parts that are even goosebump inducing, for me anyhow.
