Also, I'm disappointed that The Corpse of Rebirth hasn't been mentioned yet.
That album came out in December of 2007 in a limited format. It was released again in 2008. However, it really is amazing
I don't have a list yet, but here are some albums that I enjoyed from 2008:
Manilla Road - Voyager
Darkspace - Dark Space III
Dead Congregation - Graves of the Archangels
Mgła - Groza
Caïna - Temporary Antennae
Faustcoven - Rising from Below the Earth
Misery's Omen - Hope Dies
Agalloch - The White EP
Earth - The Bees Made Honey in the Lion's Skull
ColdWorld - Melancholie²
Velnias - Sovereign Nocturnal
Nyktalgia - Peisithanatos
October Falls - The Womb of Primordial Nature
Urfaust - Drei Rituale Jenseits Des Kosmos
Darkthrone - Dark Thrones and Black Flags
I still want to hear quite a few albums from this year, but those are the ones I've heard and enjoyed. I wouldn't have ever listened to quite a few of them if not for this forum.