Topic of the day:
The first movie score I really noticed, and really hooked me, was Leonard Rosenman's score for Fantastic Voyage.  For better or worse, that score molded my tastes in music, and bent them to the avant-garde.  
I heart Rosenman.
My favorite Bernard Herrmann score is for The 7th Voyage of Sinbad.  Which is also one of my all-time favorite movies, and a movie I seem incapable of getting weary of.