From the chilly depths of the ocean comes an album so fierce, so metal, that only an exquisitely kickass piece of artwork could do it justice.  While not a strict concept album, Mastodon's 2004 metal opus Leviathan is loosely based on the story of Moby Dick.  Of course that much should be obvious, as one of the songs is entitled "I Am Ahab".  I took a chance on this album when I bought it a few years ago (I don't care for ... Read on, Daddy-O