The ER has suddenly changed from the previous episodes: the staff room has been replaced with the waiting area. However, the characters behave as nothing happened, i.e. as the ER has always been this way.
Almost no mention is made of the fact that Carol Hathaway had resigned in the previous episode and is now back working in this one, except for when the nurses are joking about Carol having to cover a shift and one of them suggests she could just quit again.
David Schwimmer has an uncredited appearance as the voice of Dr Karubian during Carter's night shift on the SICU (at 33:51)
First appearance of Omar Epps playing Dr. Dennis Gant. Epps will later star in another medical drama as Dr. Eric Foreman in House (2004).
Final appearance of Ron Eldard as "Ray Shepard ".