Executive producer and co-writer of Gilmore Girls Daniel Palladino appears in a cameo role as the "Town Loner" (uncredited).
At the baby shower, Sherry's friends comment that she isn't a baby person and Sherry agrees. She tells Lorelai that she wasn't sure if she was even going to go through with it at all; however, in season 2 episode 14, Rory and Sherry go out together and Rory learns that Sherry wants at least 2 kids and before getting together with Christopher she had seriously considered single parenthood.
Maureen the publicist tells Lorelai "She meant to run all those people down, but you didn't hear it from me." This is a reference to the July 2001 incident where celebrity publicist Elizabeth Grubman backed her Mercedes into a crowd of people outside an inn in the Hamptons. She was tried criminally on 26 felony charges and was civilly held liable for charges.
This is the second appearance for the character "Caesar," played by a different actor than the first.
While Rory is telling Lorelai multiple catalogs from the same company equals starting a forest fire, Lorelai's coffee mug has the World Wildlife Fund logo on it.