* AwesomeMusic: You wouldn't expect a show as cute as this to have [[http://www.youtube.com/watch?v=XZaSFLVa1PM such a badass opening theme.]]
** A number of the ending music video segments, such as "I'm Back (And Bluer Than Ever)", "All The Way To The Top", "Comin' To Life", and "All Day Jam"
** Guy Moon's electronic score for all the scenes taking place in the titular [=ChalkZone=]
* BaseBreaker: Snap for a little bit, as some fans (and even non-fans) loved him, while the other half didn't (which tends to be common for the "comic relief" characters). The majority of the fans in recent years love him.
* BizarroEpisode: "The White Board Zone". It has a plot [[MindScrew too screwed-up]] to explain but all we know is that in the end [[spoiler: it was all just a dream]].
* BrokenBase: The music video segments. Fans either love them, hate them, are indifferent, love some but hate others, or liked them more when they were in the target audience. And then there are some fans who just skip the videos altogether.
** The fourth season's ArtEvolution. Some fans loved [=ChalkZone=]'s more detailed look, the new outfits on Rudy and Penny, the outlines in the real world becoming colored rather than black, and the real world becoming more colorful. Other fans didn't like it as much, thinking that the art change was either too much or just unnecessary and preferred the original look.
* CanonDiscontinuity: One of the two only Oh Yeah! shorts not to be shown on the show proper, "Chalk Rain". Also notable because it featured a fact about Chalkzone that never was mentioned again: the rain in Chalkzone is the chalk sidewalk drawing being washed away... [[DepartmentOfRedundancyDepartment by the rain]].
** Despite this, a clip of it still appears in the intro.
* EarWorm: The theme song, by far. To a lesser extent, the Accordion Worm song.
** The 1-minute music video songs run a close second.
** Skrawl's song. After two or three variations of it, it will never leave your head.
** "Rapunzel, Rapunzel, let down your long hair!"
** "Oh, I put on my pants three legs at a time, just like anyone else, just like anyone else!"
** "Diving over the moon, swinging off of a star..."
** "There's so many things that a line can do!"
** "I'm an artist who's the smartest/and there's nothing going on my mind..."
** Almost any of the songs could qualify. It was a ''very'' musical show.
* EnsembleDarkhorse: Skrawl. It helps that he's voiced by Creator/JimCummings.
* HilariousInHindsight: Here, we have a property involving a person creating whatever he wants using a special writing utensil... No, wait, I'm [[BaitAndSwitchComparison thinking of]] [[{{Scribblenauts}} something else]], nevermind.
** [[WesternAnimation/ThePowerpuffGirls Buttercup]], one of Elizabeth Daily's most popular roles, has an episode where she destroyed the chalk of her sister, Bubbles. This becomes ironic in [=ChalkZone=], where Rudy Tabootie, who is also voiced by Daily, pretty much has chalk as his main weapon.
** [[WesternAnimation/FostersHomeForImaginaryFriends This wouldn't be the only show featuring a little boy and his blue best friend who he made up]] that Candi Milo (Snap) would star on (she was not the voice of Bloo, but she did voice Coco, Madame Foster, and [[FountainOfMemes Cheese]])
*** This is taken even further in the Japanese dubs of both shows- Makoto Tsumura voices both Rudy and Mac.
** When Snap masquerades as a foreign exchange student in "Snap Out of Water", he claims to be from Greenland. Reggie responds with, "[[Film/MeanGirls If you're from Greenland, why are you blue?]]" Since this was one of the original shorts on ''WesternAnimation/OhYeahCartoons'', it would be five more years until ''Mean Girls'' was released.
** Meta example: in the episode "Future Zone", one of the torture devices Craniac 3 uses on Rudy is "the grandmother lips of the future", which is a robotic old woman with huge lips [[ItMakesSenseInContext used to kiss the victim's entire face]]. When the episode was released on the Nicktoon compilation VHS ''Nickstravaganza!'', the episode that played right before it was "[[WesternAnimation/SpongeBobSquarepants Grandma's Kisses]]"
** The show got a soundtrack in February 2003 entitled ''In The Zone'', and was released under Jive Records (which Nickelodeon was releasing its' soundtracks under at the time). Jive would release another album [[BritneySpears of the same name]] later that year in November.
* [[GermansLoveDavidHasselhoff Japanese Very Much Enjoy Chalkzone]]
* MemeticMutation: "Rudy's got the chalk!"
** Various [=GIFs=] of Rudy drawing the portal with the text "Fuck this shit, I'm going to [=ChalkZone=]" have appeared often on Tumblr.
** As are "why friendzone when you can [=ChalkZone=]?" jokes.
* {{Misblamed}}: Fans of ''WesternAnimation/InvaderZim'' complained that this show replaced their favorite show. While in reality, [=ChalkZone=] was delayed for two years. Not to mention that ''Zim'' was still running during the first season of the show.
** It's also been misblamed for being a rip-off of the 1970s British cartoon ''Simon in the Land of Chalk Drawings'' (which later aired on Nickelodeon in 1979 and throughout the '80s as part of ''Pinwheel''). Co-creator Bill Burnett stated in a recent interview that ''[=ChalkZone=]'' was ''never'' meant to be a rip-off of the show- in fact, he had never even heard of it until after ''[=ChalkZone=]'' finished production.
* {{Moe}}: The main trio. Actually, the entire show is moe.
** Rudy's already a cute kid, but he's even cuter as an eight-year-old in the first two ''WesternAnimation/OhYeahCartoons'' shorts.
** Rudy's two-year-old cousin, Sophie, who appeared in "The Terrible 2 1/2s", "Pop Goes the Balloon", and "When Santas Collide".
* MostWonderfulSound: Rudy singing. While all three of the main trio's voice actresses can sing very well, E.G. Daily (Rudy) is the only one who made a career out of it. Doubles as TheCastShowOff.
* NarmCharm: A lot of the music video segments could qualify. One example would have to be "Chunky", a rock song that features lyrics about...painting your room and going to the moon with chunky peanut butter. The lyrics in a lot of the songs are very goofy and cheesy, but the EarWorm quality mixed with Rudy, Penny, and Snap's voice actresses all being really good singers make them enjoyable for a number of fans.
** The opening theme could also be seen as this- it's so unnecessarily epic that it ends up being '''awesome'''.
* ScrewedByTheNetwork: Not only was the series premiere delayed for years, the last 6 episodes didn't air until 2008... a whole 3 years after the beginning of the final season. Even more, 2 additional episodes were planned but never aired at all.
** The show originally aired at 8:30 PM on Friday nights (for new episodes- repeats would air throughout the entire week) during season one and got extremely high ratings (even being the seventh highest-rated animated show for the 6-11 demographic and the fourth highest rated Nicktoon in 2002). Despite that, it took over a year for season two to air (to the point where some viewers had begun to think Nick canceled it after six episodes), and Nickelodeon moved the timeslot to 9:30 PM. While this may have worked for ''Invader Zim'', which was aimed at an older audience, ''[=ChalkZone=]'' was aimed at a younger audience than ''Zim'', and 9:30 PM is usually around the time the target audience would be going to bed. It got worse when Nick gave up all the show's airtime to more popular fare like ''[=SpongeBob=]'', ''The Fairly [=OddParents=]'', and ''The Adventures of Jimmy Neutron: Boy Genius'', leaving it with only its' 9:30 PM timeslot on Fridays and one timeslot on both Saturday (two if you count the show on Nick on CBS) and Sunday.
* TastesLikeDiabetes: Couldn't be any more sugar-overloaded even if it tried.
* TheyWastedAPerfectlyGoodCharacter: Terri Bouffant after she became an antagonist in "Indecent Exposure", wanting to expose [=ChalkZone=]. Her only other appearance as an antagonist was in "Snap vs. Boorat". The show ended one episode later.
* ToyShip: Rudy and Penny. Rudy's been shown to have a crush on Penny in numerous episodes, and some episodes hint that Penny may return
* UglyCute: Some fans feel this way about Skrawl
* UncannyValley: The titular character of "Skrawl's Brain"
** Robo-Rudy from "Double Trouble" is also pretty unsettling.
* ViewerGenderConfusion: Snap. The character is male, but the voice sounds fairly ambiguous to some people (being voiced by Creator/CandiMilo and all).
* VindicatedByHistory: When it was still running, ''[=ChalkZone=]'' was despised by a lot of older Nickelodeon fans. The reasons varied, but most of them boiled down to the above misblaming of the show being accused of getting ''Zim'' canceled, the show overall being too "tame" compared to the more "edgier" Nicktoons at the time (which were, and still are, rife with NightmareFuel, GettingCrapPastTheRadar, and [[GrossOutShow gross-out humor]]- not that ''[=ChalkZone=]'' didn't have moments like these, but they weren't a big part of the show) like ''[=SpongeBob=]'', and (inevitably) the original target audience for Nick in the early '90s growing out of the network and claiming that [[NostalgiaFilter it just wasn't as good as the old shows]]. These days, you will find much more fans than haters.
* WereStillRelevantDammit: The show happened to be made about five years ''after'' everyone stopped using chalk for things like school boards, restaurants, and the many uses that seem to pop up in the show.
** Due to hipster baristas, shop owners and street artists, Chalk seems to be making a comeback.
* WhatDoYouMeanItWasntMadeOnDrugs: A show about the adventures of a child in a world made of chalk? ...yeaaaah.
* TheWoobie: Penny in "Mother Tongue"
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