Well, I am here to start a thread on bands that I just came across that others have seemingly known about for a while. For whatever reason I didn't get into these bands until after I joined this message board or saw reviews for them. I can't believe I waited this long! Here's a few:
Katatonia--Bought "The Great Cold Distance" a couple months ago and man I love it. Just what I need when I want something easier on the ears
Soilent Green--Heard about em all these years, but just bought their new one. I am now going to go buy their older stuff as well. 
Immortal--I know, I know...I am a black metal newbie here. "Sons of Northern Darkness" is where I have started and I love it.
WITTR and Agalloch--"Two Hunters" and "Ashes..." both purchased at same time as Immortal and I can't believe it took me so long.
Between the Buried and Me--Denied the purchase of Alaska and then almost missed out on one of my new favorites "Colors". Since buying Colors I righted my wrong and purchased Alaska...glad I did.