Hilarious In Hindsight / Spider-Man

• In Amazing Fantasy #15, the introduction of Spider-Man back in 1962, the wrestler Peter defeats is called Hogan. When John Byrne redid the origin in the late '80s, he deliberately redesigned Crusher Hogan to look like Hulk Hogan as a result of this. The Movie later referenced this by having Macho Man Randy Savage play the wrestler, who was called Bonesaw. Macho Man and Hogan have a long past.
• With a hint of irony. During his early Spider-Man works, Spider-Man 2099 writer Peter David, working on the advice of fellow writers and editors^note Stern had quit before revealing the identity of the Goblin, he told his solution to his successor Tom DeFalco who revealed that he didn't like it, and so spun wheels on other candidates and encouraged other writers to do so "revealed" that Ned Leeds was the original Hobgoblin—which several fans thought was questionable given how Leeds died and the original Hobgoblin mystery writer, Roger Stern, came back and revealed that it wasn't the case. David had intended Father Jennifer to be the (Green) Goblin 2099, but it was revealed that Gabriel O'Hara was Goblin 2099 (though this was later retconned to be an imposter). Someone had to appreciate the irony, even if (as the link shows) David himself doesn't. And much like Stern with Roderick Kingsley, Peter David did ultimately reveal that Jennifer was indeed the Goblin.
• There's a scene in One More Day where Mephisto tells Spider-Man of the infinite number of alternate paths his life could have taken, and Spidey asks if there's one where he was a little girl. Years later in Spider-Verse, at least two alternate young girl versions of Spider-Man (Penelope Parker and Peni Parker) were introduced.
• The Clone Saga was originally going to be revealed as the work of Mephisto, but it was decided that it was stupid for Mephisto to get involved with Spider-Man.
  • Turns out he's also not above using clones to mess with him.
• Joe Quesada once said the Classic and Ultimate Marvel universes meeting would be a sign that Marvel had "officially run out of ideas." The makers of Spider-Man: Shattered Dimensions didn't get this memo. Well, granted, they don't actually interact with each other, but still.
• And then in 2012 came the Spider-Men series. Like the above, also well-written and fun.
• As of 2015, Miles Morales is now officially part of the mainstream Marvel Universe alongside Peter.
• Spidey's hatred for the Spider-Mobile and (in at least one instance) his original Spider-Armor comes across as this considering that he just kept on getting new armored suits and eventually was perfectly okay with riding on a new version of the Spider-Mobile that he built as a member of Parker Industries.
• In The Amazing Spider-Man (1963) #101, Peter takes a potion that was intended to remove his powers, but instead gave him two extra pairs of arms. While lamenting his situation, Peter calls himself a "Human Centipede". Forty-seven years later, Peter turned out to actually have it a lot better than the other Human Centipede.
• Long before that, Amazing Spider-Man Annual #5 featured a gag page where Spider-Man's drawn in the style of various other comic and cartoon characters that Marvel notes is what he'd look like if another company owned him, including one which portrays him as a Mickey Mouse style character. Keep in mind this came out in 1968.
• A crossover between Miles and Spider-Gwen had a scene where, while hopping across various alternate realities, the two briefly ended up in the DC Universe, complete with a Lawyer-Friendly Cameo from Superman himself. Brian Bendis, Miles' creator and the writer of the issue in question, jumped ship to DC the following year, where he began writing the new Superman (Brian Michael Bendis) series.
• In Amazing Spider-Man #308, when Spider-Man's up in a cemetery, he sarcastically wonders if he's going to fight Beetlejuice. 29 years later and Beetlejuice's actor plays the villain of his next movie.
• In the "Changes" story arc from The Spectacular Spider-Man Vol. 2 #17-20^note it eventually culminates with him gaining organic web-shooters a la the Sam Raimi films, one particular◊ Wham Shot of Peter in the midst of a transformation into a giant spider had him uttering a certain phrase that's highly familiar these days...