Easy. TO KILL A MOCKINGBIRD. One of the greatest musical depictions of childhood experiences -- both the warm and nostalgic, and the dark and unsettling. That it happens to have John Williams (who is MY no. 1 greatest composer ever!) on piano is just the icing on the cake.
It's not the greatest score ever, but SPACEHUNTER is a pretty cool soundtrack. Fantastic 'western in space' vibe to it. Some composers live a whole lifetime and don't write anything near as good as SPACEHUNTER, which is just 'another good score' on EB's vast and impressive film music resume.