Drudkh - Blood in Our Wells
Agalloch - Ashes Agaisnt the Grain
Hammers of Misfortune - The Locust Years
Wolves in the Throne Room - Diadem of 12 Stars
Summoning - Oath Bound
I don't feel like listing my top 10, because I can't remember it at the moment ...
However:
Agalloch - Ashes Against The Grain
Saturnus - Veronika Decides To Die
!T.O.O.H! - Rad A Trest
Spawn of Possession - Noctambulant
Mirrorthrone - Carriers Of Dust
Glass Casket - Desperate Man's Diary
Maroon - When Worlds Collide
Raunchy - Death Pop Romance
Winter's Bane - Redivivus
Strapping Young Lad - The New Black
Devin Townsend Band - Synchestra
Hammers of Misfortune - The Locust Years
Wolves in the Throne Room - Diadem of 12 Stars
Kataklysm - In the Arms of Devastation
Infected Malignity - The Malignity Born From Despair
Those are the only two that I really like from 2006 so far, but I am really looking forward to Incantation, Vader, Suffocation, Malevolent Creation, and Slayer.
I really like Drudkh - Blood In Our Wells, Summoning - Oath Bound and Månegarm - Urminnes Hävd - The Forest Sessions EP. Haven't heard Sodom - s/t but i think it's good. Also, i'm waiting for Negura Bunget - Om to be released... in october.
Agalloch, Drudkh, Summoning, Gama Bomb, Tankard, Countess, plus crap I can't recall and crap that's not out yet that will pretty much be a guarantee, like Graveland and (hopefully) Arghoslent.
I agree with most mentioned here (drudkh, summoning, agalloch, etc.)... some I still gotta check out (like Wolves in the Throne Room). Wormphlegm's Tomb of the Ancient King is also a solid 2006 album choice.
Right now, the most anticipated albums for me are definitely the new Blut Aus Nord and Arghoslent albums.
I haven't heard a whole lot this year but out of the ones I have, my favorites are:
Decapitated - Organic Hallucinosis
Dismember - The God That Never Was
Cannibal Corpse - Kill
Yes I know, not a very broadened list but I still need to catch up on a few releases. Hopefully when the new Bal-Sagoth arrives in the mail I can add it to the list.