I also love Epcot Innoventions area music. Just makes me happy, brings back wonderful memories especially with Flower and Garden Festival seeing all the beautiful colors.
I wish I could like this twice! My favorite movie soundtrack is Somewhere in Time.
I also have a soft spot for Tchaikovsky, especially Swan Lake.
Epcot has introduced me to some lovely instrumentals, my favorite being Saint-Saëns Symphony #3, otherwise known as the Organ Symphony, which is used as the finale for Impressions de France. That film has a lot of wonderful music, but I can never listen to the Organ Symphony without shedding a tear.