We see Jimmy, Carl, and Sheen in Jimmy's lab, and on the monitor it says it is scanning for life forms. The scanner goes over North America but nothing shows. Wouldn't Hugh be detected since he was never atomized? Not to mention Jimmy, Carl, and Sheen themselves.
If the nanobots could just atomise the lab doors, why did they need Carl to open the doors for them to enter?
Betty Quinlan had a cameo appearance in the halls of Lindbergh Elementary before she got "corrected" by the Nanobots, marking her fourth appearance.
Second appearance of Goddard's Flycycle.
A rare occurrance happens in the episode: Hugh calls Judy by her real name.
Jimmy is left-brained and Cindy is right-brained.
Principal Willoughby likes kittens. (It says so on the keychain that he dropped when he was "corrected.")
The Neutrons now have a birdbath in their front yard.
This is the second appearance of the Nanobots.
The Nanobots keep referring to their saucer module as the 'old module'. This is actually impossible, as their original saucer was destroyed in "Safety First".
When The Nanobots cut Jimmy's paper, peices of paper fly out. But, the paper has no rips of tears.
The credits airing with this episode are for "The Retroville 9 / Grumpy Young Men."
Terry can be seen writing sentences on the chalkboard in Miss Fowl's class, even though he "moved away" in "Safety First."
If you look behind Jimmy's ear when he says, "Nanobots? But how?" in class, you can see Sheen sitting at the desk behind him. But Sheen is at the front of the classroom, doing his interpretive dance!
Before the commercial break, Nanobot 1's eyes turn red. When the show comes back, no time has passed, but Nanobot 1's eyes are back to their normal color, yellow.
When the Correcto-Tech explodes at the end, Cindy and Libby reappear in their normal clothes. They were still wearing their Nanobot-corrected clothes when they were deleted.
Nanobot 1: What's it like in your little 'dream world'?
Nanobot 2: A little humid...
(After the Nanobots sample the school's lunch)
Nanobot 1: Error! Error! Detecting tasteless chipped beef special.
Nanobot 2: The beef-to-chip ratio is way off. Adding steak sauce.
Nanobot 1: Steak sauce? Spicy mustard is the way to go.
Nanobot 2: Oh, really, Wolfgang? Why don't we just throw in an old shoe?
(The module throws a shoe into the pot)
Gretchen: But I already made shoe twice this week!
Hugh: Not a soul on the entire block! ... Maybe they got together and formed an angry mob! (yelling) Wait up, everybody, I wanna be in the mob, too!
Nanobot 1: We must follow the Creator and await our chance to correct for error.
Nanobot 2: And then he'll love me again!
Nanobot 1: (tiredly) Oh, what is it like in your little dream world?
Nanobot 2: A little humid.
Nanobot 2: Ohh, if I had the old module back, I'd correct for error like no one's ever corrected for error before! Then the Creator will be pleased with me.
Nanobot 1: I have it! I'll use the old module to correct for error. Then the Creator will be please with me!
Nanobot 2: Hey! You stole my idea!
Nanobot 1: I used your idea as a springboard.
Nanobot 2: You stole my springboard.
Jimmy: "Ode to Cindy." (the Nanobots take his poem) Hey!
Nanobot 1: "Roses have low spectral wavelengths / Violets have high."
Nanobot 2: "Cindy is unable to express these values in Angstrom units, / 'Cause she's not as smart as I."
Nanobots 1 & 2: (pause, then laugh) Error! Error!
Nanobot 1: Woah, two eyes! Now my gaze is twice as commanding!
Nanobot 1: He's giving us a second chance!
Nanobot 2: (laughs evily) The fool!--I mean,
Nanobots 1 & 2: Yay!
Nanobot 2: I'm telling Motherboard!
Nanobot 1: We are programmed to delete extreme error! But this module has no delete function!
Nanobot 2: It's got a molecular atomizer.
Nanobot 1: Close enough!
Jimmy's Poem: Cindy sings the body electric...
I Sing the Body Electric is a poem by the great American poet Walt Whitman that appears in his most famous collection Leaves of Green. It was also later used by science fiction writer Ray Bradbury for the title of an episode of the Twilight Zone, and later again as the title of a collection of short stories.
Nanobot 2: Julio Iglesias!
Nanobot 2 mentioned Julio Iglesias, who is the father of Enrique Iglesias. They are both Hispanic pop stars who have had successful careers in the United States.
Hugh: My own personal time, my piece of the sky, my secret garden!
This could be a reference to two famous books "A Piece of the Sky", and "The Secret Garden." "A Piece of the Sky" is a modern autobiographical classic by Robert Newton Peck that tells of his running the family farm after his father's death. "The Secret Garden" is a famed children's book by Frances Hodgson Burnett about a girl named Mary and her discovery of a secret garden in a gloomy manor.
The music that plays when the Nanobots go around deleting Retroville is a spoof of the old Raymond Scott "Powerhouse" music used on countless Looney Tunes cartoons.
Jimmy: (making the nanobots find the exact value of pi)
When Jimmy asks the nanobots to check his homework one last time, causing them to self-destruct by making them find the exact value of pi, which is relative and therefore infinite, he employs the same tactic that Mr. Spock used in Star Trek episode 43 "A Wolf In The Fold" to shut down the Enterprise's computers that had become the host of a malign alien intelligence.
Nanobot 2: Adieu, adieu, to you, and you, and you!
This is a line in the song "So Long, Farewell," from The Sound of Music. It is sung when the von Trapp children are saying goodnight.
The scene where the Nanobots are trying to get into Jimmy's lab is taken from an early Saturday Night Live skit. In the skit, a landshark tries to get into people's apartments, first by telling them they have a telegram, like the Nanobots did. Carl, like the apartment owners, didn't believe this. Next, the landshark called, "Candygram!" This worked. For Carl, the Nanobots called "Llamagram?" Of course, this worked on Carl.
Nanobot 2: (sarcasticallly calling Nanobot 1 "Wolfgang" while correcting the tasteless chip-beef special)
This is a reference to Wolfgang Puck, a famous chef.
Cindy: Shall I compare Jimmy's head to a summer's day? It is more pointy, and more ill-formed.
Cindy's first poem was a spoof of William Shakespeare's "Sonnet XVIII."
Cindy: . . . somewhere men are laughing, and somewhere children shout; but there is no joy in Retroville--cause Jimmy is an idiot!
Cindy's second poem was a spoof of the famous "Casey At The Bat," by Ernest Lawrence Thayer. The last lines of the poem are: "... somewhere men are laughing, and somewhere children shout, But there is no joy in Mudville-- mighty Casey has struck out!"
Hugh: (being the last man on Earth)
Hugh being the last man on Earth was a parody of The Twilight Zone episode "Time Enough At Last", where a man was the last person on the planet and could do whatever he wanted. Instead of an endless supply of pie, he wanted to read all the books in the public library. (However, before he could start, he broke his glasses!)