Dr. Cox talks to a red stapler similar to the one used in Office Space. John C. McGinley was in Office Space.
It is revealed that the Janitor is born in 1965 (being 19 years old in a 1984 sports meet)
In the previous episode, (#15) J.D. shaves his head to go the extra mile for a leukemia patient. In this episode his hair is back and there's no mention of it. But in the next episode, (#17) J.D.'s head is shaved and he refers back to the event in episode 15.
A Terrible Towel used by Pittsburgh Steelers fans can be seen in Turk and Carla's apartment.
Seems to be aired out of order with "My Chopped Liver". "My Chopped Liver" opens with J.D. still having a shaved head from the episode "My Extra Mile", and has no mention of Carla's pregnancy.