* ActorAllusion: Harold occasionally mentions watching ''{{Traders}}'', a show where Patrick [=McKenna=] played the role of Marty. Edgar K.B. Montrose's first appearance had him talking about the film ''DancesWithWolves'', talking about how the "Native guy" (the role played by actor Graham Greene), should have gotten the Oscar.
* DawsonCasting: An {{egregious}} example; [=McKenna=] was ''31'' when he started playing teen-aged Harold. Averted in the later episodes, in which Harold was portrayed as an adult.
* DirectedByCastMember: Rick Green (Bill) directed dozens of episodes.
* ExecutiveMeddling: Steve Smith isn't too fond of the second season, during which the executives pressed him to make the show into more of a sitcom. Hence the expanded cast and plotlines that we actually saw develop, as opposed to simply being related by Red. When Smith got back full creative control from the third season onwards, he went back to the old format.
* NamesTheSame: [[WesternAnimation/HeyArnold Stinky Peterson]], although Stinky is probably a nickname in this show's case.
* RealLifeRelative: Dougie Franklin's brother Benjamin was played by Ian Thomas' older brother [[{{SCTV}} Dave Thomas]].
* WrittenByCastMember: Taken to its literal conclusion. Steve Smith co-wrote all 300 episodes. Rick Green co-wrote every episode for the first eight seasons and the last two or three seasons. Later cast members like Peter Wildman and Bob Bainborough would also contribute to dozens of episodes in their own right.