A while back I read about a guy who saved old newspapers. He'd go out and collect them. His living room was stacked so high that he had tunnels that he had to crawl through to move from room to room. Then he disappeared. He was in a tunnel when it collapsed and killed him. Can you imagine having to clean that up?
I believe that you are thinking of Langley Collyer. The story of Langley and his brother, Homer, is fascinating. The small book, Ghosty Men, by Franz Lidz, is an excellent account of their story. I highly recommend it.