Being a relative newbie here, I'm not sure if this subject has been mentioned. If so, I apologize in advance.
But we all know that a film score can truly enhance a movie. The music can accentuate the emotions conveyed in a film. That score can make a film a more special experience.
My favorite film composer was John Barry. He composed some of the most memorable scores I've heard in movies. From the truly magnificent score he composed for my favorite film, "The Lion in Winter", through "Born Free", "Out of Africa", "Chaplin", and the music to many of the James Bond themes, Barry was a master at composing.
Of course there was Bernard Herrmann. The Hitchcock films, "Psycho", "North by Northwest", and my favorite of the Hitchcock scores, "Vertigo". Some of the most beautiful music ever composed on film is in "Vertigo". In my opinion.
There are some decent film composers today. Alexandre Desplat (who composed the music for "The King's Speech", among others) is a fine composer.
Who are some of your favorites?