Not since Elisabeth Kubler-Ross’s “On Death and Dying” with its study of the five stages of grief or Ernest Becker’s “The Denial of Death”, has there been such a tour-de-force depiction of the process of dying and the way that death impacts  those who are left behind.  This groundbreaking documentary series reminds me that many of us still have forgotten how to say goodbye and how to die. But some of us have figured out how.  “Time of Death”, a six-part miniseries produced by Showtime,   follows three  men and five women ranging in age from nineteen to seventy-seven years.  In six emotionally...