One of my favorite death metal bands, and perhaps the band that really got me into death metal back in college. The combination of Trey's otherwordly guitar playing, Pete's complete mastery of the drumkit, and Lovecraftian themes sealed the deal for me.
As for my favorite album from them, it's a tie between Covenant and Gateways to Annihilation. Their their slow, deliberate pace on Gateways further heightened the evil atmosphere...and Erik Rutan is the best second guitarist MA ever had, he absolutely smokes here!