The redneck farmer says that "oxygen doesn't grow on trees", but trees (and other green plants) absorb carbon dioxide and excrete oxygen, so in a sense oxygen does grow on trees.
Dr. Zoidberg has teeth for the first few episodes starting with this one.
Amy lost the keys in the crate they delivered into the amusement park, and later found them in a claw machine. Bender trys to get them with his Extendo-Arm and gets caught in the act by Moon Partol and says "That's her officer's, she programmed me to do Evil"
Zoidberg's name came from a game that David Cohen programmed named "Zoid". He sent it in to a company to see if he could sell the idea but, he was rejected.
In this episode as well as "The Lesser of Two Evils" it is shown that the people of the future have lost all touch with history, but in the rest of the series they show remarkable knowledge of history.
Opening theme promotion: IN HYPNO-VISION.
Opening theme cartoon: Baby Bottleneck (1946, Warner Bros.)
There is a sign that reads 'Orlon Candy' above a stand. Orlon is a synthetic fiber resembling cotton, thus cotton candy. And this is immediately followed by Fry remarking how artificial everything is.
Leela pulls the 'Archduke Chocula' cereal box out of nowhere.
The redneck farmer's hat reads 'The Moon Shall Rise Again.'
Merchandise available at Lunar Park includes a t-shirt that reads "I'm With Stupid - On the Moon", a bumper sticker that reads "My Other Car is a Porche - On the Moon" and a refrigerator magnet that says "What Part of MOON don't you understand?"
The sign that appears during the robot whalers ride reads "Whalers of the Sea of Tranquility".
When on the Moon, there are bails of hay on the ceiling of the barn.
One of the Goophy Gophers appears to be missing an eye.
There is a man in the "Lunar Park" admissions line with a t-shirt that reads "MOON-U", possibly meaning that there is a University on the Moon or that the man is wearing a t-shirt with a rude comment on it.
The faces on the dollar bills which Bender steals from Amy's wallet are not in the exact centre.
Bender stole Amy's money, but she still has some to play the claw game with. This shows that she is extremely rich.
While on the Moon in the amusement park, a pink sign in Alien Code #1 appears behind Bender, reading 'TASTY HUMAN BURGERS.'
We learn that exposure to magnets messes up Bender's inhibition unit, causing him to sing folk songs.
The plaque inside the Lunar Lander reads "Lander returned to this site by the Historical Sticklers Society".
When Fry and Leela were jumping across a "stream" of crocodiles, you can see that they have helmets on, but where do they get their air from?
This episode was nominated for an Annie Award for Outstanding Individual Achievement for Writing in an Animated Television Production.
According to the show's producers, and the Season 1 DVD, a scene in an early version of this episode had the Crushinator indicate to her father that she was pregnant with Bender's child.
According to rough sketches on Disc 3, Hermes' name was originally going to be 'Dexter.'
According to the DVD commentary, the Professor's line about the commercial being aired during the Super Bowl was written when they thought this episode would premiere right after the Super Bowl, but Family Guy took the time-slot instead.
According to the DVD commentary, Amy does, in fact, speak actual Chinese when she gets upset.
This episode marks the first appearance of Amy Wong, Hermes Conrad, Dr. John Zoidberg, Sal, Mr. Horrible Gelatinous Blob and the Crushinator.
The emblems on Fry and Leela's spacesuits are identical to the emblems on old LEGO astronaut figures. In recent years, they've been making more intricately decorated spaceman figures, but on the old figures, they all had the same gold planet and rocket orbit logo.
When we see the cereal 'Admiral Crunch,' being a parody of Captain Crunch, this is a subtle reference to Star Trek, most noticeably The Next Generation. Whenever we take a look into the 'future,' the Captains are always Admirals.
Amy calls 'Luna Park', the "happiest place orbiting Earth." This is a take-off on Disneyland's tagline "The happiest place on Earth." Also, a door within the park with a 33 on it can be seen, this is a reference to Disneyland's Club 33, which is the only place within the park where alcohol is served. Also, the first ride the team go on is a take off of the Disneyland Anaheim ride Pirates of the Caribbean. Additionally, the "Goophy Gopher Revue" is presented by Monsanto, a corporation that also sponsored many Disneyland and Walt Disney World ride, specifically many of the Tomorrowland rides.
Bender encounters a farmer on the Moon who has three robot daughters. This is a recurring theme found in jokes ranging from the dirty to the clean variety, but each of them has the same central plot of a young man meeting a farmer who has three available daughters that he is very protective of and never allows to date.
Bender's arm stretching out is a reference to the way Inspector Gadget's arms expanded and contracted. Also, the way Leela propelled Fry and herself out of the crater using the oxygen from their tank is very similar to how Brain pulled Gadget back to a space station while in space using exactly the same method in the episode 'M.A.D. In The Moon.'
Ralph and Alice from The Honeymooners television series are a part of the ride that shows how people came to the moon. The ride itself also depicts how people misunderstand history by taking Jackie Gleason's famous phrase out of context.
Arcade games seen within the Lunar Park complex include 'Gender-Neutral Pacperson' which is a parody of Pacman and Ms. Pacman. 'Dodecapede' which is a parody of Centipede and Millipede. And lastly, 'Mortal Kooperation' which is a reference to the Mortal Kombat series of games.
Bender poking the Craterface in the eye with a bottle refers to the film Le Voyage Dans la Lune (1902) in which a group of scientists travel to the Moon by way of a large, hollow bullet shot out of a cannon. The bullet flies through space and hits the moon (specifically, the 'Man in the Moon') in the eye. The film, directed by Georges Méliès and based upon Jules Verne's classic From the Earth to the Moon, is considered to be the first in the Sci-Fi genre.