Full Moon, Saturday Night is the twentieth episode of the first season of the NBC medical drama series ER. It premiered on March 30, 1995.

"Full Moon, Saturday Night"
Season 1, Episode 20
Full Moon, Saturday Night
Air date March 30, 1995
US viewers 32.9 M
Written by Neal Baer
Directed by Donna Deitch
Episode Guide
← Previous
"Love's Labor Lost"
Next →
"House of Cards"


Greene , who is coping with emotional problems due to the Jodi O'Brien case and his crippling marriage, does not impress Dr. William 'Wild Willy" Swift, the new Chief of Emergency Medicine, but Lewis does impress Swift.

Hathaway 's patient believes that he is a werewolf. Ross goes out on a date with Diane Leeds. Benton tends to his sick mother.

NBC Description

NIGHT OF THE LIVING, DEAD: Carter and Chen extend their shifts to experience the ER during a full moon, and they are not disappointed.

Greene is so despondent over the breakup of his marriage that Lewis is left to run the ER. Lewis's skills impresses the new ER Chief, Dr. Swift (Michael Ironside).

Patients include nine naked fraternity pledges are brought in with frostbite after a hazing stunt, a drunk man hit by a car, a hiccuping guy who "comes out" to his fiancee after being diagnosed with HIV.

Cast and Characters


Anthony Edwards as Dr. Mark Greene 

George Clooney as Dr. Doug Ross

Sherry Stringfield as Dr. Susan Lewis

Noah Wyle as John Carter

Julianna Margulies as Nurse Carol Hathaway

Eriq La Salle as Dr. Peter Benton


Conni Marie Brazelton as Nurse Conni Oligario

Yvette Freeman as Haleh Adams

Emily Wagner as Pickman

Abraham Benrubi as Jerry Markovic

Ming-Na Wen as Deb Chen

Gloria Reuben as Jeanie Boulet

Christine Harnos as Jennifer Greene

Beah Richards as Mrs. Benton

Michael Ironside as Dr. William Swift

Deezer D as Malik McGrath



  • In this episode we learn that Carter 's birthday is June 4, 1970.
  • In this episode, Michael Ironside makes his first appearance as Dr. William "Wild Willy" Swift, the interim ER Chief that replaces Dr. Morgenstern . Ironside previously worked with Anthony Edwards on the 1986 film Top Gun, starring Tom Cruise and Kelly McGillis.
  • Music: "Twist and Shout," The Isley Brothers; "Born to be Wild," Steppenwolf
  • The Nintendo arcade game that Mark Greene is playing is Killer Instinct.


  1. "Nielsen Ratings - March-May 1995 " (PDF). USA Today. (May 15, 2015).