this is a hella stupid thread but...

As far as The Future Sound of Music goes, Ulver probably has better songs than that, but that's just what came to mind for me.

While Ulver in general is just amazing, there is something about that song that blows my mind every time I listen to it. The soft piano chords, the abstract innocent sounds that beep in, the noises section at the end... it is like perfect.
 
and now more

Clint Mansell: Work
Espen Jorgenson: Move Ahead Quickly (Camille :p)
Godspeed You! Black Emperor: Antennas to Heaven
Mono: A Speeding Car
A Silver Mt. Zion: God bless our dead marines
Boards of Canada: Aquarius
Empyrium: Waldposie
Esmerine: Why she swallows bullets and stones/Red Fire Alarm
Ventian Snares: Hopless pursuit of remission
Agalloch: The Lodge (Dismantled)
Ulver: The Waltz of King Karl
Jaaportit: Unesina
When Day Descends: Supression
Parabstruse: And I, Cape of
 
Genesis - The Musical Box.
The Cure - A Forest.
Esoteric - Morphia.
Portishead - Western Eyes.
Ephel Duath - The Passage (Pearl Grey).
Emperor - Ye Entrancemperium.
Akercocke - Sheltered From The Sand.
Skinny Puppy - Smothered Hope.
Ulver - Christmas.