* AlternativeCharacterInterpretation: Is [[Franchise/TheSlenderManMythos the Slender Man]] as [[HumanoidAbomination monsterous]] as he usually is, or was he actually on the good guys' side? The ending gives support towards the latter, as [[spoiler:he waves to the heroes from the shadows.]]
* AreYouSureThisIsForKids: The various references to British media in the later seasons are not exactly the sort of thing Creator/{{Nickelodeon}} would allow. "Black Rain" crosses over into full-on WhatDoYouMeanItsForKids territory.
* BaseBreaker: The inclusion of [[Franchise/TheSlenderManMythos the Slender Man]] in "Black Rain" has raised a few eyebrows.
* BigLippedAlligatorMoment: The duo grabbing hats and canes for a brief (as in ''ten seconds'') dance in "The Photo Man".
* EvilIsSexy: Of an interesting variation, Electro the evil television is described as [[EvilMakesYouUgly wrinkly and ugly]] while the other villains appearances have been described on the show, they aren't thorough into appearance detail besides pointing out obvious details such as [[AnimeHair weird hair]] or [[MadScientist lab coats]].
* FunnyAneurysmMoment: Calvin, overreacting as usual in the 2009 episode "Invasion", claims that "Japan is going to fall into the ocean!" Two years later, Japan found itself at the mercy of the ocean.
* SugarWiki/FunnyMoments: [[Funny/CalvinAndHobbesTheSeries An entire page full of it.]]
* GeniusBonus: Among the topics discussed and/or mentioned in "Roughin' It" include [[http://en.wikipedia.org/wiki/Squat_lobster squat lobsters]] that perform [[http://en.wikipedia.org/wiki/Chemosynthesis chemosynthesis]], as well as [[http://en.wikipedia.org/wiki/Acromegaly acromegaly.]]
** Then there's "[=SouthWest=] Pacific", which is about Calvin performing in a school play. What does the title mean, then? Well, during UsefulNotes/WorldWarII there was an [[http://en.wikipedia.org/wiki/South_West_Pacific_theatre_of_World_War_II area]] entitled South West Pacific, where many important things happened. The wartime definition for this? A ''theater''.
*** Not mentioning the musical ''Theatre/SouthPacific''.
* GrowingTheBeard: Starts out as RougeAnglesOfSatin and {{Plagiarism}}: [[TitleTheAdaptation The Fan Fic]] before finding an identity of its own by Season 2 and ''really'' starts getting better in Season 3 and beyond.
* HilariousInHindsight: You know how Rupert and Earl's GoldfishPoopGang love [[AlienLunch peanut butter milkshakes]]? [[http://m.dennys.com/en/menu/item/810 Well...]]
** Calvin calls HarleyQuinn [[Webcomic/{{Homestuck}} "Hardly Quinn".]]
** Dr. Brainstorm's original design had him with [[FishEyes unfocused]] gold eyes, like a certain [[WesternAnimation/MyLittlePonyFriendshipIsMagic muffin-lover...]]
** The film ''Free Birds'' has the same premise as "Calvin, Hobbes, and the Pilgrims".
** Two for "Wild Movie":
*** One of Calvin's ideas for a movie is ''Tornado Sharks'', which is almost ''exactly'' what the 2013 MadeForTVMovie ''[[http://en.wikipedia.org/wiki/Sharknado Sharknado]]'' is about.
*** Also, the sequel's name, as proposed by Calvin, is ''Tornado Sharks 2: I Think Things Just Got a Little Windier''. The sequel to ''Sharknado'' [[http://www.cnn.com/2013/08/08/showbiz/movies/sharknado-sequel-title-ew/index.html will be named]] the equally stupid ''Sharknado 2: The Second One''.
* SugarWiki/HeartwarmingMoments: [[Heartwarming/CalvinAndHobbesTheSeries Right here.]]
* MagnumOpus: The fic is perhaps the culmination of the works of Creator/{{Swing 123}} and Creator/{{Garfieldodie}}. Fitting, since it's a ContinuityCavalcade that still manages to be enjoyable without reading the earlier fics.
* MemeticMutation: Among the commentators in the later years of the fic, [[CatchPhrase "IT'S DOCTOR BRAINSTORM!"]] became this.
* SugarWiki/MomentOfAwesome: [[Awesome/CalvinAndHobbesTheSeries They're on this page.]]
* {{Narm}}: While "Have You Seen This Tiger?" is intended to be a {{Deconstruction}} of ThePrankster, Season 1's customary terrible grammar gets in the way.
--> '''Socrates:''' [[ThatMakesMeFeelAngry You're making me angry, Calvin.]] And when I get angry, it makes me [[RougeAnglesOfSatin what]] to use my claws[[WantonCrueltyToTheCommonComma ,]] and tear something up!
* NightmareFuel: [[NightmareFuel/CalvinAndHobbesTheSeries See this page.]]
* {{Padding}}: Season 1 had a RunningGag where Hobbes would misinterpret something Calvin said or did, and Calvin would retort. The duo would then argue for a painfully long amount of time about something with no meaning to the plot. This has thankfully been phased out.[[note]]It should be noted that a similar chain of events was a RunningGag in the ''Literature/HankTheCowdog'' series, which the author loves.[[/note]]
* PainfulRhyme: Done intentionally with Calvin's love poem from "Insanity is in the Air":
--> "Roses are red, [[ShapedLikeItself violets are violet.]] Just thought I'd mention that, since [[WesternAnimation/SpongebobSquarepants Spongebob]] isn't violent."
* TearJerker: See [[TearJerker/CalvinAndHobbesTheSeries here]].
* WhatAnIdiot: Calvin attempts to fix a satellite dish ''when a tornado is coming.''
* WhatDoYouMeanItsForKids: "Black Rain". A ''[[Franchise/TheSlenderManMythos Slender Man]]'' story on a ''kid's show?'' [[NightmareFuel/CalvinAndHobbesTheSeries That's only the tip of the iceberg.]]
* TheWoobie: Susie Derkins has the world against her in "Chains".
** Dr Brainstorm in "Thunderstorm" considering he spent most of the movie trying to defeat his friend-turned-enemy who apparently betrayed him and rubbed his temporary victory in his face during the climax.
** Socrates seems to be heading toward an arguable direction towards this in the final season.
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