Post-Production : Music or Not by Petter Wahlback

What are your thoughts of music in films? Do you like lots of music like adventure, fantasy and sci-fi movies, minimal scores like No Country for Old Men, and The Birds (manipulated bird sounds), and No score at all like The Idiots. Due to my occupation (Composer) I am obviously biased, but think it is extremely important not to overuse music. Do you have any good examples of films with no score (What really counts as a score?), great scores or use of music, and really bad ones? Lets talk!