1Knives Out

In Knives Out (2019), the portrait of the deceased has a subtle change after the murder has been solved... a smirk.
2. In Joker (2019), one of the "super rats" can be seen in the background when Arthur Fleck is at a payphone.
3. When greeting each other in Aquaman (2018), Jason Mamoa and Temuera Morrison decided to do the traditional Maori greeting of touching noses, known as the Hongi, to honor their Polynesian heritage.
4. In Willy Wonka and the Chocolate Factory (1971), when reading the contract to Charlie and Grandpa Joe, Willy Wonka has to say “etc. etc.” in the middle of each sentence because he only has the left half of the contract.
5. In Bryan Signer's X-Men films, (2000, 2003, and 2006) the X in Fox's logo is illuminated for a slightly longer time than the other letters.
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6SpiderMan

The Twin Towers are still visible in one scene in the 2002 SpiderMan movie.
7. In Deadpool (2016), the pizza place Wade orders From is called Feige’s Famous, which is possibly a nod towards Kevin Feige, president of Marvel Studios.
8. In the final scene of WALL-E, Alaska no longer exists, a subtle and final nod to the film’s subplots on climate change.
9. In John Wick (2014), to get Daisy to wake John up, they had to smear bacon grease onto Keanu's face so the puppy would lick him.
10. In Up (2009), Carl wears a bow tie at the funeral because he never learned to tie a tie without Ellie.
11Hercules

In "Hercules" (1997), Hades says "Guys, relax. It's only half-time" exactly at the 46-minute mark, the halfway point of the 92-minute movie.
12. During a fight scene in Fight Club (1999), you can see the narrator's head nod upward in the upper left corner, right as Tyler Durden is kicked in the face, subtly signaling their connection.
13. In Cars (2006), the airplane contrails look like tire tracks.
14. Marlon Brando refused to learn his lines for Superman (1978), so he instead read them off baby Superman’s diaper. He earned $2.25 million for 10 minutes of screen time.
15. During the food storm in “Cloudy with a Chance of Meatballs” (2009), a man loots a TV, then a TV loots a man.
16Bean

In the movie "Bean", Mr. Bean's first name on his passport is "Mr."
17. The hug that Voldemort gave to Draco, in Harry Potter And The Deathly Hallows Part 2 (2011), was entirely improvised. Hence the awkwardness from both actors.
18. In Avengers Endgame, Thor's opening attack with Stormbreaker was aiming for Thanos' head, following his advice from Avengers: Infinity War.
19. R2-D2 trips a battle droid in the background in Star Wars: Episode III - Revenge of the Sith (2005).
20. In the film Rat Race (2001), the first cow Seth Green hits whilst hanging from a hot air balloon has a map of the world as its spots.
21Fight Club

In Fight Club (1999), when Edward Norton's Character receives a call from Tyler Durden. There's a sign on the phone booth stating “No Incoming Calls Allowed” indicating that it’s not possible to receive incoming calls.
22. In Independence Day (1996) they filmed Will Smith dragging the alien across the salt flats of Utah. Will Smith improvised the "And what the hell is that smell?" Nobody warned him of the horrible smell that sometimes comes of the Great Salt Lake due to billions of dead brine shrimp each year.
23. In Harry Potter and the Chamber of Secrets (2002) before Harry gets sucked into Tom riddles diary, he’s in a candlelit room. When he’s in the diary, everything is in black and white yet, we can still see the candlelight flickering on his body
24. In "The Spongebob Squarepants Movie" (2004), Spongebob states he has 374 consecutive employee-of-the-month awards, this means he has been working at the Krusty Krab for a little over 31 years.
25. In Spider-Man: Into the Spider-Verse (2018), before meeting the other spider-people, Miles spider-sense goes off a split second later than both Gwen and Peter.
