ER

Network: NBC
Episodes: 332 (hour)
Seasons: 15

Show dates:
September 19, 1994 — April 2, 2009

Performers include: Sharif Atkins, Maria Bello, Linda Cardellini, George Clooney, Anthony Edwards, Scott Grimes, Laura Innes, Alex Kingston, Eriq La Salle, Julianna Margulies, Kellie Martin, Paul McCrane, Michael Michele, Ming-Na, Parminder Nagra, Erik Palladino, Mekhi Phifer, Gloria Reuben, John Stamos, Sherry Stringfield, Maura Tierney, Goran Visnjic, Shane West, and Noah Wyle.

Series Description:
This long-running medical drama is set primarily in the emergency room of the fictional County General Hospital in Chicago, Illinois and focuses primarily on medical cases. In the early years, the series followed the lives and careers of third year medical student John Carter (Wylie), Dr. Susan Lewis (Stringfield), Dr. Mark Greene (Edwards), Dr. Peter Benton (La Salle), Dr. Doug Ross (Clooney), and Nurse Carol Hathaway (Margulies). All of the original castmembers moved on by the end of the 11th season but many other characters have been added over the years.

•	The series was created by novelist Michael Crichton who wrote Jurassic Park and other bestsellers.
•	Future Oscar-winner George Clooney and Noah Wylie appeared as emergency room doctors in a first season episode of Friends (which also began in 1994 on NBC).
•	Julianna Margulies’ character was supposed to commit suicide in the pilot but test audiences responded so positively to her that the producers asked Margulies to continue on the show.
•	Clooney left the show in 1999 when his character Dr. Doug Ross quit the hospital. He made a brief reappearance a year later and his character reunited with Carol Hathaway when Margulies left the show.