Created by best-selling author Michael Crichton, this series centers on the medical personnel in the emergency room of a Chicagocounty hospital. ER tracks the inner workings of County General Hospital, a Level One Trauma Center where heroic doctors and nursesare faced with life-and-death decisions on a daily basis. In its fourth season, ER received 16 Emmy nominations, includingOutstanding Drama Series. Watch the fourth season, which begins with the critically acclaimed documentary episode that aired'live.'