Featuring perhaps the most recognizable guitar riff in rock history, "Iron Man" tells a sci-fi tragedy of a man who travels to the future, witnesses the apocalypse, and turns to iron on his journey back. Muted by society, he ultimately wreaks vengeance on mankind. 5. "Electric Funeral"
Black Sabbath's 'Paranoid' is a rare album that is simultaneously overplayed and never overrated. It is a timeless classic whose influence can still be heard in every corner of heavy music today. From the anti-war cry of "War Pigs" to the sci-fi tragedy of "Iron Man" and the raw desperation of its title track, this is an album that demands to be heard.