What are some good mellower instrumental tracks by metal bands?

ummmm.....did everyone forget the magnificient "Fear and Wonder" by Dimmu Borgir? That song (along with Hybrid Stigmata) has gotten like 10 of my friends completely into metal
 
Coinsidence? I did my own album yesterday.
These are some of the mellow songs I used:

Opeth - For absent friends, Harvest, A fair judgement
Dark Tranquillity - The Mind's eye, Ex Nihilo
Arch Enemy - Vox stellarum, hydra
Dimension Zero - Everlasting Neverness
Nightwish - Forever yours

Many of these are instrumental but non the less mellow