thepennymachine, well I have been spending a lot of time on thinking about Eraserhead and I've got some ideas how to explaqin this movie. As for me Man in the Planet is symbol of evil, lady in radiator is symbol of goodness. I've got a couple of other ideas how to explain Lady in Radiator's behaviour. However I still don't know what the worm means, so I'll be waiting for your work to finish. Take care dear!