Bathory - 'The Return'
Obviously well known as an inspirational black metal album, but did you know that Gorgoroth's 'A Sorcery Written in Blood' demo title is taken from the first line in the track 'The Return of Darkness and Evil', and that Marduk's 'Infernal Eternal' live album title is taken from a line in the song 'The Right of Darkness'. Well now you do.
Hail Bathory, thou influential beast, thou.