In 1974, author Michael Crichton wrote a screenplay then entitled "ED" (for emergency department) based on his own experiences as a medical student in a busy hospital emergency room. Producers were not interest… See more

The original starring cast consisted of Anthony Edwards as Dr. Mark Greene, George Clooney as Dr. Doug Ross, Sherry Stringfield as Dr. Susan Lewis, Noah Wyle as medical student John Carter, and Eriq La Salle as … See more

A typical episode centered on the ER, with most scenes set in the hospital or surrounding streets. In addition, most seasons included at least one storyline located completely outside of the ER, often outside of … See more

U.S. seasonal rankings based on average total viewers per episode of ER on NBC are tabulated below. Each U.S. network television season starts in late September and ends in late May, which coincides with the complet… See more

Throughout the series ER received positive reviews from critics and fans alike. It scored 80 on Metacritic, meaning "generally favorable reviews", based on 21 critics. Marvin Kitman from Newsday said: "It's like M*A*S*H with … See more