Lost In Translation has a flawless soundtrack.
First post nails it.Lord of The Rings
Space jam
The Lord of the Rings trilogy is one of my favorites. The Hobbit didn't really seem to match them.
I don't know about best because music is so personal, but these are some of my favourites off the top of my head.
*snip* metric fuckton of images
And many more that I can't think of right now.