Alternative Character Interpretation: Due to her role and giving Donovan the fake Grail Elsa's character is open to a lot of interpretation, with some seeing her as a pragmatic opportunist, others as a selfish villain, and others as someone who started out selfish but grew to love Indy.
Contested Sequel: Raiders of the Lost Ark is frequently seen as the best film in the series due to its action scenes, our introduction to Indy, and plain old First Installment Wins. However, a number of fans see this film as the best; the story is tighter, the comedy is better, and the interactions between Indy and Henry not only show a complex relationship between the two but give the story another layer besides "find the MacGuffin". Some fans also point out that while Raiders has the more iconic scenes (the prologue, the opening of the Ark, etc.), Crusade has a surprisingly large number of iconic lines (see Memetic Mutation below).
Designated Hero: Young Indy is, let's be honest, a thief in the prologue, swiping the Cross of Coronado from the guys who found it because he thought he had better plans for it. Keep in mind Indy didn't know what Fedora and company (and their boss) were going to do with it (for all he knew, they were archaeologist-adventurers themselves!) — and even if he did, what made it his call to steal from them? We're presumably meant to be on his side, as when the film cuts to 1938... Indy's stealing the cross from Panama Hat and crew again.
And Panama Hat and crew end up dying as a result. Granted, it's implied that Panama Hat and his crew were criminals...
There's a bit of Fridge Brilliance that the guys who had the cross are grave robbers. Which Indy became before he repented of it.
Ensemble Darkhorse: Henry Jones and Marcus Brody are notable examples. The Grail Knight too.
Even Better Sequel: There's a not-insubstantial group of people who consider this film to be even better than Raiders, due to the more emotionally involving story and the brilliant comic duo of Harrison Ford and Sean Connery. James Rolfe has this viewpoint, as his list of top 50 films shows.
Fanon: For a while some fans thought (or hoped) that drinking from the Grail at the end gave Indy immortality, or at least an extended lifespan and slower aging. An older, slower Indy in Kingdom of the Crystal Skull ruined that idea. Then again, The Young Indiana Jones Chronicles shows that Indy lived to at least his early nineties in the early 1990s, so perhaps drinking from the Grail did give him an extended lifespan, if nothing else.
The scene where Indy flies and crashes the plane becomes a bit winceworthy when, in March 2015, Harrison Ford was injured when he crashed his plane, which was also a WWII-era plane. Not helping is the line "Fly, yes. Land, no..."
Two years later he nearly caused a very bad accident when he landed in front of a plane about to take off, causing an investigation about whether he could keep his pilot's license.
Indy, disguised as a porter, punches Colonel Vogel and throws him off the zeppelin, saying to the passengers "No ticket!" afterwards. In April 2017, United Airlines got in trouble for forcing one of their passengers off an airplane by physically assaulting him.
When Indy infiltrates the castle his dad was being held in, he tries to pretend to be a Scottish lord. When the butler sees through this he says, "But if you are a Scottish lord, then I AM MICKEY MOUSE!" Guess who acquired Lucasfilm in 2012?
Polished Port: Although the Graphic Adventure is best remembered for running through the Apple, Amiga, and MS-DOS compatible systems, the FM-Towns version is considered the better version through the use of a simpler interface, 256-color graphics, and Redbook Audio based on the film score. The game is still in English despite originally being released for Japanese consumption.
Retroactive Recognition: Nick Gillard, who was the fight coordinator for the Star Wars prequel trilogy, is the Nazi who watches Indy fighting through the periscope, and is knocked out after he mocks him.
Values Dissonance: Indy forcefully kisses Elsa when they meet up after the boat chase, which leads to her getting mad at him before devolving into passionate sex. As societal standards have changed, this is viewed as outright sexual harassment and even borderline rape.
Win Back the Crowd: Temple Of Doom had a decidedly mixed reaction, with Steven Spielberg and George Lucas admitting they let their personal problems interfere with their work. They explicitly sought to go back to the roots of the first movie - return to a more light-hearted adventure, as well as bringing back such elements as Marcus, Sallah and the Nazis. By all accounts, the duo succeeded.