ER/No Brain, No Gain
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No Brain, No Gain is the seventh episode of the third season of ER, and the fifty-fifth episode overall.
Starring: Anthony Edwards (Dr. Mark Greene), George Clooney (Dr. Doug Ross), Sherry Stringfield (Dr. Susan Lewis), Noah Wyle (Dr. John Carter), Julianna Margulies (Nurse Carol Hathaway), Gloria Reuben (Jeanie Boulet) (credit only), Laura Innes (Dr. Kerry Weaver) (credit only)
Guest Starring: Abraham Benrubi (Jerry Markovic), Jorjan Fox (Dr. Maggie Doyle), John Aylward (Dr. Donald Anspaugh), Dwier Brown (Dr. David Herlihy), Cecil Hoffmann (Gail Herlihy), Jenny O'Hara (Nurse Rhonda Sterling), William Sanderson (Mr. Percy), Sab Shimono (Dr. Okida), Matthew Glave (Dr. Dale Edson), Ellen Crawford (Lydia Wright), Yvette Freeman Haleh Adams), Kathleen Freeman (Rhonda's Patient), Bellina Logan (Kit), Joan McMurtrey (Birdwatcher), Tom Towles (Teenage Boy's Father)
Special Appearance by: Omar Epps (Dr. Dennis Gant)
Special Guest Stars: Glenne Headly (Dr. Abby Keaton)
Guest Starring (end credits): Don Perry (Dr. Stan Breedlove)
Emily Wagner (Pickman), Monte Russell (Zadro), Suzanne Carney (Janet), Lucy Rodriguez (Nurse Bjerke), Dinah Lenney (Shirley), Te-See Bender (Mrs. Urbanski), Bob Clendenin (Anesthesiologist), Wanda Lee Evens (Mrs. Dorsett), David McSwain (Mr. Urbanski), Logan Pulizzi (Ronnie), Steven Robert Wollenberg (Doctor)
Carter believes that a surgical patient is not competent to consent to surgery which leads to a fight with Dr. Edson; Mark finally asks Susan out on a date; Benton tries to save a gang-banger's life despite being declared brain-dead; Carol continues to clash with inexperienced nurse Rhonda, who makes another mistake.