Trivia: It's in this episode that the Heimlich Maneuver is used for the first time by the paramedics. At the USC game, when a guy is choking on a hot dog, John and Roy are called, and John uses the Heimlich. Up until season 6 we've seen the guys use other methods, such as the ChokeSaver which look like huge white tweezers, to remove obstructions in an airway, as seen in 4x9, "Foreign Trade."
Trivia: "Kung Fu" was not canceled due to poor ratings, as it performed solidly during its run. It was canceled due to the physical stress and abuse on David Carradine's body, and it was wearing him out.