I've seen all of those- outside of the Matrix, which has a couple individual songs I remember- I can't even think of the music. to me- not iconic scores.
all of the ones listed in teh OP are to me solid examples of the music being as integral and iconic as the movie. I went with Good Bad and Ugly, but love the Sting call-out a few posts up.
First thing that pops into my head for these movies is the music score. Easily iconic scores.
I agree with all listed here.. but for a few I have never seen.
Of course, like I said - all of these scores pop right into my head, along with so many more, so maybe the scores stick with me for a lot of movies?
eta - how can you not even think of the music for these movies? google them, it will come back to you.