Trollheart

You could try the "Contagion" album by Arena. It's based around the idea of a virulent strain of man-made disease that gets out and wipes out most of the population of the Earth. Some great songs there, specially "Mea culpa", "Moviedrome" and "Tsunami". Also "The art of reason" by Threshold, from Subsurface. There's also the rather brilliant "The pilgrim's address" from Fellini Days by Fish --- a truly moving anti-war song.