"Love's Labor Lost" is the nineteenth episode of ER's first season. It first aired on NBC in the United States on March 9, 1995. The episode was written by Lance Gentile and directed by Mimi Leder. The episode earned 5 Emmy Awards (Writing, Directing, Editing, Sound Editing and Sound Mixing) and several other awards and nominations.
Dr. Mark Greene encounters the case of a pregnant woman suffering from complications that severely threaten her life as well as her unborn baby. Elsewhere, a teenager is accidentally poisoned by insecticides and Dr. Peter Benton has to deal with the aftermath of his mother's fall.
In its original broadcast, "Love's Labor Lost" finished first in ratings for the week of March 12, 1995, with a Nielsen rating of 24.2. It was the highest rated show on NBC that week with Seinfeld and Friends second and third respectively. In 1997, TV Guide ranked it as the third in its list of the 100 Greatest Episodes of All-Time. In 2009, it ranked the episode sixth. The show's producers also consider it to be one of ER's best episodes, with John Wells saying he holds it up as "an example to everyone involved creatively of what the best of the show could be."