In DIE HARD (1989), the way John and Holly argued by incessantly talking over each other, was directed in the style of “Dave and Maddy” arguing from MOONLIGHTING, which is where audience might recognize (newcomer) Bruce Willis from.
In Hercules (2014), in the film's opening narrated by Iolaus, Hercules performs his 12 Labors alone. However, it is revealed that Iolaus always exaggerates the legend of Hercules by concealing the help of his companions, and the film's credits show them assisting the hero in performing the Labors.
In Wake Up Dead Man (2025), as the group is hatching a plan to take down evil, A. Scott's character proclaims to join the cause, saying "You have my sword". Movie cuts to Jeremy Renner's character, who starts with "And...", cutting away before him saying "...my bow". A play with LotR and Hawkeye.
In Star Wars a new hope (1977), Leia claims she is on a mission from the Imperial Senate. Vader knows this to be untrue as it is reveal later that the Senate is dissolved.
In Shin Godzilla (2016), English is used throughout the film by aircraft flown out of the Misawa Air Base since it’s shared with the US while the pilots out of the Kisarazu Base only speak in Japanese
In Shin Godzilla (2016), when taking off, English is used by the plane pilots since Misawa Air Base is shared with the US while the helicopter pilots speak in Japanese since Kisarazu Base is only used by the SDF
In Mercy (2026) (set in 2029) a character’s smartphone shows “7G” even though we are currently on 5G, implying the film’s near-future world has jumped two cellular generations in just three years.
In The Lord of the Rings: The Return of the King (2003), you can see that the area around Frodo's neck is starting to chafe due to holding the weight of the Ring.
In Mad Max: Fury Road (2015), Max is O-negative, universal donor for red cells, not whole blood. An arm-to-arm transfusion includes plasma; O-negative plasma carries anti-A and anti-B antibodies that could cause acute hemolysis in someone like Nux or Furiosa, unless they're also O-negative.
The hyenas in The Lion King (1994) are often assumed to be a dull gray color due to them being mostly seen in poor lighting. However, the one time we see them in broad daylight during the stampede shows they are actually a lighter brown color.
In Schindlers List (1993)—in two separate shots—Amon Goeth is not covering the stopwatch, he’s staring at his manicure when “timing” the Jewish forced laborer Rabbi Menasha Levartov. He does the same thing later in the film before killing an unnamed Jewish Boy.
In Final Destination Bloodline (2025) The way the metal tubes are positioned in Erik's tattoo during his death is a reference to one of the poster of Final Destination 5 (2011)
in the truman show (1998), the vitamins on the kitchen table are labelled "d-3". this is a subtle nod to the fact that truman is essentially a prisoner living on "set 3" of the massive studio complex