I originally bought the album because of NIN's "The Perfect Drug" too. But I have to say, the entire album blew me away.
First, 2 of my favourite bands are on their, Rammstein and NIN, and after finding out that the album was put together by Trent Reznor was the icing on the cake.
I won't go into too much detail about the tracks because they are all just brilliant, but I have to say that the ones that stood out to me are Rammstein's. Heirate Mich and Rammstein, 2 gruesome but gorgeous songs that make perfect sense on this album. Rammstein are so dramatic both lyrically and visually, and they really make this soundtrack more brilliant.
But also the way that it has been made - the selection of songs is just genius, each one is different, so you are ultimately kept on your toes and your heart is kept racing throughout listening, Trent Reznor has this eye for choosing the best, he is just one of music's greatest musicians.
Myself, not being into soundtracks, I have to say I have been converted and I would definitely recommend this soundtrack to anyone, both lovers of the film and lovers of music. However, with Marilyn Manson, Rammstein and NIN all on one album, it certainly leans to a more industrial fan if you are just after the music, perfect for me then!
But, it is definitely worth while if you love the film, if you are just trying to get hold of the Perfect Drug, if you want to get some of MM's covers, or if you love Rammstein. This soundtrack is just perfect.