When Jerry finds the magazine about Carter's family, he says that Carter's father's name is Roland. However, this was changed in later seasons to John Truman Carter II (Dr. Carter is John Truman Carter III).
Season 1x23 episode "Love Among the Ruins" is the second to reveal that John Carter is from an extremely wealthy background.
Rick Rossovich, Michael Ironside and Anthony Edwards all starred together in the Tom Cruise megahit, Top Gun
Julianna Margulies (Carol Hathaway) & Wayne Duvall (Umpire) also worked together on two episodes of The Good Wife (2009) as Alicia Florrick & Detective Harcourt respectively.