Noah Wylie and his character in the show, John Carter both share the same birthday.
The show does most of the filming in LA, but twice a year, they do on-location filming in Chicago.
Carol Hathaway, played by Julianna Margulies, was supposed to become brain-dead after a suicide attempt, but the writers decided to make her a regular on the show.
In the live episode in 1997, the baseball game that Dr. Douglas Ross was watching was the Cubs-Astros game, also being shown live that night.