acronym for Emergency Room. NBC's treatment specializes in more reality than TV usually gives and many rotating steadycam shots. Of course there's still a bit of soap opera as well, which is understandable seeing all of the beautiful people on the cast. To name a few:
George Clooney, Noah Wyle, Anthony Edwards, Julianna Margulies, Eriq LaSalle, Gloria Reuben, William H. Macy, Laura Innes, Alex Kingston, ... and a bunch more. That's what I could come up with off the top of my head.