Acting in the Dark: Gwyneth Paltrow thought she was shooting a scene for an Avengers movie. She didn't realize it was for Spider-Man until years laternote She wasn't being intentionally kept in the dark. She just honestly thought she was shooting a scene for a different project.
Jacob Batalon and Laura Harrier get billed below Zendaya (and don't even get to appear on the poster) despite the fact that Ned and Liz have much larger roles than Michelle does as Peter's best friend/Secret Keeper and love interest, respectively.
Gwyneth Paltrow gets fourth place billing in the end credits despite only appearing as Pepper Potts in a cameo less than a minute long.
Jennifer Connelly wasn't even in the animated CBB despite voicing the A.I installed in the Spider-Man suit.
California Doubling: Though the majority of the movie takes place in Queens, New York, much of the movie was shot in Atlanta, Georgia, with additional footage shot in Germany. A portion of the film was still shot in the real New York City, though.
The Cast Showoff: Tom Holland is a trained and experienced dancer and gymnast, which made it easier for him to perform a lot of his own stuntwork.
The Danza: Ghanaian teen actor Abraham Attah portrays a student named Abraham Brown; the character, a minor character and brother to the more well-known Hobie Brown, has existed since 1974, however, so the name wasn't created for Attah. In the Spanish dub, he's even voiced by Abraham Vega, taking it a step further.
Dawson Casting: Laura Harrier was 26 at the time of filming, playing the high-school student Liz Allan. It actually became a point of criticism as next to the much more convincing Tom Holland, the age difference really sticks out.
Extended footage of Peter Parker's blog during his trip to Berlin, including scenes of him bringing his homework to Berlin, discovering he has a television in his bathroom, and also one where he, as Spider-Man, goes to a Berlin nightclub and hangs out with the other party-goers, allowing a few of the girls an opportunity to be swung from his webs. He also inadvertently ends up saving the chancellor and is dubbed as "Der Erstaunliche Klebrige Junge" by the German media.
Peter explains to the other debate club meetings that he has no choice but to drop out of the Academic Decathlon, citing that Flash Thompson would be a suitable replacement. The other students heckle Peter by throwing food at him, and Peter has a conversation with Liz.
After having his backpack and his clothes stolen, Spider-Man runs home with the cover of darkness. At the same time, the man that Peter thought was a carjacker is still stuck to his car, struggling to be freed, and his neighbor informs him that the fire department have dealt with Spider-Man's webs before, and that their advice is to let it dissolve with time.
After speaking with Happy Hogan on the phone during his trip to Washington, D.C., Peter and Ned react to the Department of Damage Control's presence surrounding the Triskelion. Michelle answers Ned's questions of curiosity by stating that Damage Control is cleaning up after Captain America destroyed the Helicarriers. Ned replies that Captain America did it to save the people from tyranny, although Michelle responds that that is what they want the public to think.
Adrian Toomes sulks in his warehouse, sulking over his inability to gather new materials as Spider-Man has interfered with his business. Liz gives him a phone call to ask about the noise the water heater is making, and Toomes assures her that he will fix it when he comes home. After ending the phone call, Toomes throws down a shelf on the floor in frustration.
Aaron Davis is still stuck to his car in the parking garage, unable to free himself. He drops his car keys to the ground and is unable to pick them up, or convince a bystander to help him. After a while, he calls his nephew, Miles Morales, and apologizes for not being able to make it.
Peter tells Ned that he has to continue stopping Vulture even without Stark's Spider-Man Suit, adding that he has been practicing with his homemade variation. Ned offers to help, but Peter rebukes him, stating that the "guy in the chair" position is not a real thing. Peter and Ned then do their secret handshake while Ned offers Peter the best of luck on his mission, with Peter returning the sentiment towards Ned and his upcoming quiz.
After loading the Stark Cargo Plane, Happy Hogan calls his mother to gloat that he finally pulled off something for Tony Stark without a hitch. However, he notices the cargo plane smoking and plummeting in the distance, and tells his mother that he will call her back later. After ending the call with her, he calls Stark Industries and asks to speak with Tony.
After the Ambush on Peter Parker, Betty Brant and Jason Ionello, the two anchors of Midtown School of Science and Technology's news team, report that Herman Schultz was found webbed to a school bus by students after the homecoming dance had ended, with various students taking selfies and images with the assailant. Morita, the principal, makes a special announcement where he warns the students to delete the images from all of their social media accounts, lest they be wary of the consequences. It is also revealed that Shocker's Gauntlet was retrieved by Tiny McKeever, who is seen wearing it during the news footage.
Along with other school topics, Betty and Jason do a segment on who Spider-Man might be under his mask, and interview Roger Harrington, Ned and Michelle. Harrington is unaware, Michelle states that she isn't sure but she has her suspicions, and Ned states that the identity of Spider-Man is a mystery no one will ever know.
A segment called "Mr. Harrington In Love" is shown, with Harrington speaking with the students on the bus, Wilson, as well as the tour guide at the Washington Monument, about his ex-wife, Tabitha.
Dueling Works: Came out one month after Wonder Woman. Both Wonder Woman and Homecoming feature a top tier iconic hero of their respective comics publisher (DC and Marvel). Said hero is super strong, good-hearted and somewhat initially naive. Both were introduced on film as part of an ensemble cast in 2016 in their respective universe with Batman v Superman: Dawn of Justice for Wonder Woman and Captain America: Civil War for Spider-Man. Both films got equally raving reviews. Wonder Woman ended up the strongest at the domestic box office, grossing over $412 million while Homecoming ended up just over $330 million (which is nothing to scoff at nonetheless). Homecoming won internationally however, with over $880 million and counting vs Wonder Woman's $821.7 million (being released in 30 more countries than WW didn't hurt).
Fan Nickname: Iron Man's heavy involvement in the film and his Wolverine Publicity in the promotional materials, especially after his prominence on the final poster, has caused some fans, both joking and serious, to call the movie Iron Man: Homecoming, Spider-Man: Homecoming Starring Iron Man, Iron Man 4, or Iron Man 7.note Counting the original Iron Man trilogy, the first two Avengers films, and Captain America: Civil War.
Flip-Flop of God: Jon Watts claimed that the MCU Spider-Man won't have Spider-Sense due to not wanting to "lean" on it. This is in spite of the fact that this power was subtly utilized in Civil War. Kevin Feige then said that he did have it but intended for the film to make it "second nature" rather than an over-the-top reaction like the Raimi or Webb films. Spidey definitely has Spider-Sense in Avengers: Infinity War.
In this film, one may look at the moment where he reacts to Adrian sending his wing pack flying at him from behind without looking. Reacting with no surprise, he dodges at exactly the right moment, but nothing is made of how he knew. Bonus points for its similarity to a scene from the final confrontation with Norman Osborn in the 2002 film (where Peter's reaction - a similar backflip - being preceded by his Spider-Sense tingling was more explicitly shown.)
God Never Said That: One regarding a rumor behind Michael Barbieri's casting. Hot off of the controversy of the Race Lift of the Ancient One in Doctor Strange (2016), there were rumors that Barbieri's character would be a Caucasian version of Ganke Lee, the Korean-American best friend of Miles Morales, causing certain circles to decry Marvel as once again being discriminatory against Asian actors. Director Jon Watts was quick to debunk the rumor, however, stating that Barbieri's character would not be Ganke, nor a character based on Ganke. It was later revealed that Jacob Batalon's version of Ned Leeds will adopt Ganke's traits (which would avoid bringing up issues with race, since Batalon is Filipino), avoiding the issue altogether. In the end, Barbieri's character ended up being Charles Murphy, a very minor character from the original Amazing Spider-Man comics, who was white to begin with.
Many people pretty much called it when it was announced that Michael Keaton would indeed play the villain: Adrian Toomes / Vulture. As mentioned above, people figured that it would be done as an Actor Allusion to his already-meta role in Birdman.
Many fans figured there would be a Captain America cameo, noting how Cap has made an appearance in at least one MCU film every year since 2011note 2011 = The First Avenger, 2012 = The Avengers, 2013 = cameo in Thor: The Dark World, 2014 = Captain America: The Winter Soldier, 2015 = Avengers: Age of Ultron and cameo in Ant-Man, 2016 = Captain America: Civil War, with the chances of one being in Guardians of the Galaxy vol. 2 or Thor: Ragnarok unlikely due to both mainly taking place off Earth, leaving Homecoming as the most likely chance for an appearance. This ended up being confirmed when later trailers showed a scene with Peter's class watching a fitness video hosted by Cap.
Kevin Feige: "I will tell you, I havent brought it up before, is we wanted a ground level villain. We wanted a villain to parallel Peters journey of whats it like to be a normal person in this world. And an example that Amy [Pascal] used and it became a touch point ... was a film by Akira Kurosawa called High and Low, which I hadnt seen before. And that we watched a number of times. And other than just exposing me to a great movie Id never seen, which I appreciated ... it was a great touch point of inspiration from Amy about somebody who looks up at a wealthy person almost in a tower every day in their life and feels the need to respond to that in a villainous way.
Feige cited the films of John Hughes as a major influence.
Method Acting: Tom Holland attended New York City's Bronx High School of Science for a few days to get a feel for what American high school is like. He declared that he'd initially suggested it as a joke, and was quite surprised when the execs took it seriously.
Milestone Celebration: This film was released in 2017, the 55th anniversary of the character. It's also the centennial of Jack Kirby, the co-creator of Iron Man, and who while having minimal involvement in Spider-Man (Ditko/Lee) did pencil the original famous cover of Amazing Fantasy #15. 2017 is also the 90th birthday of Spider-Man's co-creator Steve Ditko.
Michael Keaton playing a supervillain might come as a bit of a culture shock to fans of the 1989 Batman movie, where he played the title superhero. For others, it's right up his alley.
Zendaya herself describes Michelle as a dry, awkward bookworm. This is quite a far cry for her, since she's best known as an Idol Singer sitcom star.
Promoted Fanboy: Much like Andrew Garfield, Tom Holland has mentioned in interviews that he was a big Spider-Man fan to begin with, and getting the role was a dream come true for him. In a promotional video for Avengers: Infinity War, Holland added that he never imagined that he'd be a part of the setting, much less playing Spider-Man, after watching the first movie.
Reality Subtext: Tom Holland has become rather infamous for his inability to keep his mouth shut about Marvel secrets in interviews. The opening scene to Homecoming shows Peter Parker recording his entire trip to Berlin and fight with Captain America and his allies while Happy Hogan chastises him for failing to be discreet.
The Vulture was slated to be the Big Bad of both the third entry (before getting replaced by Venom) and the supposed fourth entry of the now Spider-Man Trilogy. Ironically, the iteration of Vulture from the third film was supposed to be played by Ben Kingsley a.k.a. the decoy/fake Mandarin from Iron Man 3.
Several pieces of merchandise depicted Shocker #2 in an MCU-style costume, complete with a mask and second gauntlet. He never wears anything remotely similar to that in the actual movie, so this was likely the merchandisers trying to make him look a little more "toyetic".
Due to production costs, most of the Vulture action figures have significantly undersized wings. One of the few figures to accurately depict his wingspan's scale is the Marvel Legends version, which had the wings as a Build-a-Figure.
While the Tinkerer had already been heavily rumored, the surprising announcement that the Shocker would be in the movie was accidentally made at a panel for Diamond Collectibles' toy line for the movie.
Photos of Spider-Man action figures in his homemade costume spoiled the fact that it was a lot more important than previously thought.
The post-credits Stinger is a cheesy informercial from Captain America about the virtues of patience. It's a deliberate troll job on people who were expecting a tease for a future movie.
Captain America: Sometimes it leads to very little and it seems like its not worth it. And you wonder why you waited so long.
To say nothing of the whole thing with Michelle being "MJ" all along — in spite of her actress repeatedly saying that this would not be the case — and this fact being revealed rather anticlimactically in the context of the movie itself. There was a later clarification explaining that "MJ" isn't necessarily a stand-in for Mary Jane, but it makes one wonder why the movie had an insane degree of cover-up for what's effectively a non-spoiler.
Charlie Plummer, Judah Lewis, and Matthew Lintz screen-tested for Peter Parker as well before the casting of Holland. The three of them were rejected, in part, because they would've been under eighteen during production and not able to film as many hours per day. KJ Apa, who played Archie Andrews in Riverdale, also tried to be casted as Peter Parker.
Jon Watts originally wanted Nick Fury to be the MCU character who would mentor Peter, which would have made it similar to the Ultimate comics, but the execs suggested Iron Man instead since the characters already knew each other in Civil War.
According to the writers, Vulture was originally going to be Peter's teacher, before they decided to have him away from the school.
The Pepper Potts cameo nearly didn't happen, but was added during reshoots.
A piece of concept art was released shortly after the film depicting Vision helping pull cars out of the water during the ferry scene.
One possible MCU Spider-Man costume would have been based off of the one used during Superior Spider-Man.
The original ending was going to have Peter reveal himself as Spider-Man in front of the press conference, in a recreation of the famous Civil War moment where he unmasks himself.
The screenwriters described a scene they had penned that did not make the final cut of the movie which would have implied that Michelle has a difficult home life. Peter and May would have offered to give her a ride home after family does not show up to bring her home in the aftermath of the Washington Monument incident.