* AluminiumChristmasTrees The tabards worn by the canteen workers (presumably the uniform of real canteen staff in the real hospital) are the same as those worn in the BBC sitcom DinnerLadies
* HeyItsThatGuy: [[PeepShow Johnson]] as Lyndon and [[PeepShow Sophie]] as Harriet, [[BlackBooks Fran]] as Caroline, [[{{Spaced}} Brian]] as Alan, and [[{{Coupling}} Susan Walker]] as Angela, while John Oliver (of ''Series/TheDailyShow'' and ''MockTheWeek'') plays a car salesman in the first episode.
** Guy is [[Series/ImAlanPartridge Dan Moody]], [[ElvenQuest Sam]], [[Series/{{Episodes}} Sean]] and Series/DirkGently - he's hosted an episode of ''HaveIGotNewsForYou''.
** CBBC actor Ed Petrie plays the sports coach when Guy was teaching a group of kids Guy Ball.
** Let's not forget ultra-cool adventurer and explorer [[BlackBooks Jason Hamilton]], who is basically Mac in a parallel universe.
** StephenMerchant is the rude lab technician in episode six (when Joanna believes she's pregnant).
* MeaningfulName Possibly just coincidence, but 'James Secretan' was the original name of a character not unlike Guy (or at least Guy's self-image), before his [[Creator/IanFleming creator]] decided on [[Literature/JamesBond something snappier...]]
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