I believe the movie "Guardians of the Galaxy" has one of the best uses of music in a film. The soundtrack features iconic songs from the 70s and 80s that are expertly woven into the story, creating a nostalgic and immersive experience for the audience. Particularly, the scene where Star-Lord dances to "Come and Get Your Love" at the beginning of the movie is a standout moment that is enhanced by the soundtrack, setting the tone for the entire film.