Headbanger's Ball II Tour back in November 2004 in Seattle, Washington when they played with Himsa, Bleeding Through, and Arch Enemy.
"Blackest of the Black," tour in 2005 in Seattle: Danzig, Doyle (Misfits), Mortiis, Himsa, Behemoth, Chimaira, and Agony Scene.
Fall 2006- Six Feet Under, Thine Eyes Bleed, at Rock n Roll Pizza in Portland, OR.
May 2005- King Diamond, Nile, Behemoth, and Black Dahlia Murder at the Roseland Theatre, Portland, OR.
(note:) I have heard from many people who went to the '02 or '03 (cant remember) tour, the one with Type O Negative and Moonspell, that it was the best COF gig. Wish I could have been there for that one.