For the TV show's YMMV page, see The Adventures of Jimmy Neutron, Boy Genius.
- Accidental Innuendo:
- Nick's line about Jimmy's extreme nausea: "I remember my first time. Shake it off, Neutron! Hah hah hah!"
- As Pan Pizza noted in his review
, one ship looks like a dragon getting a rocket shoved in an... uncomfortable place.
- Alternative Character Interpretation: Was King Goobot asking Ooblar if he's sure the humans are yummy, despite being the one who said they looked delicious in the first place a Plot Hole, or is it Goobot having second thoughts upon seeing them in person and pulling a Never My Fault?
- Aluminum Christmas Trees: Carl eating toothpaste after launching into space, mistaking it for "space food". Believe it or not, astronauts actually do eat toothpaste, but not because they like the taste. When brushing their teeth, they can't risk contaminating their airtight space capsules by spitting, so they instead use a special brand of non-toxic toothpaste that's designed to be swallowed after use.
- Awesome Music:
- "Go Jimmy Jimmy"
- "Kids in America", Covered Up by No Secrets.
- "AC's Alien Nation"
- Along with the other two aforementioned songs he did for the movie, Aaron Carter's hit single "Leave It Up to Me"—to the point that it was later on his compilation album Most Requested Hits.
- "HEY HO, LET'S GO! HEY HO, LET'S GO!"
- "We Got the Beat"
- Bowling for Soup's rendition of the show's theme song.
- "Na na they don't understand stand!"
- Britney Spears's "Intimidated" is also worthy of recognition.
- Melissa Lefton's "He Blinded Me with Science", which is a cover of Thomas Dolby's "She Blinded Me with Science".
- The soothing Backstreet Boys ballad "The Answer to Our Life".
- True Vibe's "I Can Count on You" also hits in the feels.
- *NSYNC's "Pop", played when the gang goes to Retroland. Heck, the movie's entire soundtrack is full of Awesome Music.
- Crosses the Line Twice: Kids crying out for their parents when they start to become sick or hurt themselves? Sad. One kid crying after winning a cotton candy contest? Kinda depressing. The camera pulling back to reveal he's become cartoonishly obese? Hysterical!
- Ensemble Dark Horse: Nick, though he would be Demoted to Extra after the first season.
- Hilarious in Hindsight:
- That scene where Sheen pees in the shower? That is actually considered a life hack.
- Throughout the film, Cindy regularly refers to Jimmy by his first name; this is hilarious in the fact that in the TV series, she rarely does so, preferring to address him as Neutron (or "nerdtron", among other mocking nicknames), and this is lampshaded in the episode "Stranded".
- One time, Goobot throws one of his henchmen out of the airlock, which the Junkman threatens to do to Jimmy, Carl, and Sheen in his introductory episode.
- While using one of his inventions that changes his hair (Robo-Barber), Jimmy ends up with a ponytail ("You go girl!") similar to Cindy's in the TV series.
- That scene where Sheen pees in the shower? That is actually considered a life hack.
- Inferred Holocaust: No infants and senior citizens were present at the film's climax, which means they were left all alone in the town... Some might have had older siblings, but can we expect all the kids to account for all the helpless babies?
- Iron Woobie: Jimmy. He's constantly being picked on for his small size by other people, but that never stopped him from continuing on with his life and enjoying his small group of friends.
- Lost in Medias Res: The PS2/GCN video game adaptation starts the game off at the Retroland scene, right in the middle of a conversation with Nick, with absolutely no exposition or context provided to the player about what in the world is going on. This is almost a half hour into the movie's run time (almost a third into the overall time), and without having seen it prior you would be completely lost.
- Memetic Mutation:
- "Hey Jimmy, wanna see a frog?"
- How are they breathing in SPACE?!?!
- This scene◊ of Sheen's Show & Tell presentation is often edited where Sheen and the UltraLord figure are replaced with different people and objects. Usually used as commentary on overexposure of a product, joke, or current event.
- BOIExplanation
- Moral Event Horizon: Goobot crosses it when he reveals the parents of the kids are going to be sacrificed to Poultra, and how it's all Jimmy's fault because of Jimmy's transmission.
- Poor Man's Substitute: Wally Wingert's take of Carl Wheezer in the console game wasn't well-liked.
- The Problem with Licensed Games: The PC game adaptation is pretty bad. It suffers from typical movie-based game flaws such as dated graphics that hardly compare to most PS1 games, short playtime, and clunky controls. The plot bears little resemblance to the movie and is heavily scaled back as well, though it at least does have the original voice cast reprising their roles. The console version fares little better, with platforming not designed around the game mechanics at all, and being released a year after the movie.
- Signature Scene: The kids using the amusement park rides as rockets to take off into space.
- Strawman Has a Point: Jimmy talks about how his "bubble-gum travel is the way of the future"... before crashing into a tree and falling into a rubbish bin, Jimmy full of bubble-gum on himself. Cindy then taunts "I guess trees are, like, the brakes?" However, there seems to be no other way Jimmy could stop, much less get out of, his traveling gum bubble. At least he admitted that this was a test run...
- Values Dissonance:
- An inoffensive example. Sheen freaks out when Cindy tricks him into opening his Ultralord action figure box. This viewpoint is not quite as common as it was in the 2000s, as many action figure collectors now open their boxes. This is because having a figure complete in box is still considered valuable, albiet less so than if it was mint.
- Carl and Jimmy assume they will one day be into girls, once they get past they Girls Have Cooties phase. They may not have had this assumption had the movie been made 10-20 years later.
