Jeff Buckley's "Grace" is an album that never fails to bring tears to my eyes.
Ulver's "Shadows of the Sun". Beautiful ambient music
Buckethead's "A Real Diamond in the Rough".
I know you may be thinking "WTF Buckethead?" but it's actually more of an ambient rock type thing rather than his quirky madness. Really great for a chilled out listening session.
Really love Opeth's "Damnation" but I would be surprised to hear if anyone of you guys DON'T own a copy of it. Wonderful album.
Another vote for Agalloch's "The White" EP.
As far as metal goes :
Katatonia's "Night is the New Day" is probably my favorite metal album of the previous decade (ironically it's not even that 'metal' haha). Jonas' vocal performance is so perfect it's ridiculous. Probably the most emotional vocal performance in metal ever, for my money. It's just so genuine, soulful and powerful that you can't help but just be incredibly moved by it.
Same goes for everything else about the album really. Just so deep and powerful.
It doesn't really have many hooks/catchy moments unlike The Great Cold Distance and it's also a lot more complex as far as layering goes and subtle details, as well as being more atmosphere and dynamics based.
First listen was like "Yeah, not bad", but having now heard the album hundreds and hundreds of times since I bought it earlier this year, I just really love it.
Of course, The Great Cold Distance is a stunning album as well.
A whole ton of Isis stuff really does it for me too. Kinda broke my heart when I found out they disbanded, but I guess something good can come out of that.
The Agalloch album, "Ashes Against the Grain" is a really fantastic listen for when you're feeling done, or if it's late at night and it's raining outside, or just for winter in general.
I could go on and on about post rock/post metal albums and bands though, just love that kind of music.
I think I've come to realize I may actually prefer more minimalistic, atmospheric metal over in-yer-face stuff like thrash or death or whatever.
I think it may be due to the fact I'm more in touch with my emotions now and just more chilled out and at peace with myself than I used to be, so I'm not as frequently in the mood for full on in your face metal as I would have been say, 3 years ago.