As mentioned earlier, Prof. Randy Pausch of CMU has terminal pancreatic cancer. He gave his last lecture on Tuesday; video is on the web.
When I die, I shall breathe back the breath that made me live. I shall give back to the world all that I didn't do. All that I might have been and wasn't. All the choices I didn't make. All the things I lost and spent and wasted. I shall give them back to the world. To the lives that haven't been lived yet. That will be my gift back to the world that gave me the life I did live, the life I loved, the breath I breathed. --- Ursula LeGuin