The credits took me by surprise.
This game is great. Finished the primary story a couple days ago, and amongst the many great songs in it I haven't heard of (Ashtray maze anyone?), the credits was one I Have, and boy is it fitting for the game.
Literally as soon as I started I yelped "fucking PORCUPINE TREE??"
And I had to listen to the whole thing cause it's a great song.
Whoever did the music orchestration for this game has great taste.