probably my favorite soundtrack of all time has to be American beauty
For many reasons but mainly I love Thomas Newman and worshiped his music growing up. I wanted to be a theatrical composer because of him and his ability to add substance to a movie through music. He gave me the feels while watching movies like Shawshank Redemption, The green mile, Wall-E etc.
And when i'm feeling an active inspiration i'll throw in some John Powell...the bourne soundtrack for some reason has stuck with me for years.