Rules: Post nice music with a nice description to go with it. Like that people can browse the thread to find interesting and new music of your recommendation!
Awesome Instrumental Music:
Emotional, instrumental, deep, featured in the Haruhi Movie. Superb Classical music.
The bomb. Starts low and melancholic but then it just gets more and more epic, until Extreme Epic levels. Inspirational and Instrumental.
I found this jewel a few years ago at my grandpa's house, out of sheer luck from looking at his CD's out of boredom. Turns out that it's frickin amazing. First time I listened to it, I cried a tear. (A very manly tear.) Its so beautiful. Really. Give it a listen.