At the very beginning of the episode when Monica and Phoebe cross the street, the poster of Joey promoting VD awareness (from 'The One Where Underdog Gets Away') can be seen in the background.
Rachel's middle name Karen is first mentioned in this episode.
First appearance of Nora Tyler Bing.
When Phoebe and Monica visit the man in the hospital, they try to guess his name. A hospital would have identified him from his ID and put his name on his bracelet, which he is wearing.
However, it is possible that "coma guy" did not his any ID on him and his hospital bracelet would just read "John Doe" or the like.
However, it is possible that "coma guy" did not his any ID on him and his hospital bracelet would just read "John Doe" or the like.