this be without a shadow of a doubt the best metal doc . ever to come to our screen . look back at root like blue and rickover vagnars classical influence to the well overlook blue cheer . to the true beginning black sabbath . show the ex v pressy and wife the gore full front attack on metal and twisted sister assault back just superb . the doc . stretch a far a gorgoth of norway discusses norwegian church burner and the fact that gene simmonds paint the phrase oj . just brilliant . whether you like love or have metal it worth understanding at a great level the preconceive . watch it love it hate it just rate it . thank you .