I know he's probably not up there with the greats but I loved the movie soundtrack to The Mission by Ennio Moricone and the Passion by Peter Gabriel.
I have a fairly large collection of classical music but these two artist helped me expand my 'classical' tastes in a more modern direction.
Ceili's post is is now 15 years old, and we haven't seen her here in a long time, but I do agree with her about the film scores of Ennio Morricone - wonderful music. The score of "The Mission" which she cited and as well those of "Cinema Paradiso" and "Once upon a time in America" are all quite beautiful. Morricone also wrote the film scores for most of the so called "spaghetti westerns directed by Sergio Leone.