21Snakes on a Plane
In Snakes on a Plane, when the flight attendant puts a snake in the microwave they press a “snake” preset button.
22Lilo & Stitch
In Lilo & Stitch (2002), the Stitch’s adoption paper which Nani signs is actually a thank you letter from the directors and producer to the people who helped create the film.
23Scott Pilgrim vs The World
In Scott Pilgrim vs The World, the pee bar animation is reflected in the mirror.
24Planet of the Apes
The original 1968 "Planet of the Apes" has the three apes on the Ruling Council "see no evil, hear no evil and say no evil," thus reenacting the "Three Wise Monkeys" pose.
25Ralph Breaks the Internet
In Ralph Breaks the Internet (2018), in the same scene as Stan Lee's cameo, Rocket Raccoon from Guardians of the Galaxy can be seen in the background talking to officer Judy Hopps from Zootopia.
26Harry Potter and the Goblet of Fire
In Harry Potter and the Goblet of Fire (2005), you can see the snake Nagini slithering in the reflection of the Warner Brother's logo, a subtle detail that's easy to miss. The first shot in the film is of Nagini slithering toward her master.
There’s a brief moment in ‘Mega Mind’ (2010) where Metro Man disappears for a couple of frames and then reappears again. This was the moment he describes later on to Mega Mind and Roxanne when saying he took a walk and went away to rethink his life.
28Shaun of the Dead
In Shaun of the Dead, when Simon Pegg went to the shop again, the music on the radio interrupted by the announcement in Hindi which translates to - “This is a warning! Dead people are attacking the live ones and they’re doing this to....”
29LEGO Batman Movie
In the LEGO Batman Movie (2017), Harley Quinn is seen wearing a shirt that reads “Smylex.” Smylex was the name of the poison used by Joker to poison products in the 1989 Batman movie.
In Forrest Gump, when Forrest calls security at Watergate to report the flashlights keeping him awake, the voice that answers the phone says "Security, Frank Wills". Frank Wills was the head of Watergate security at the time of the break-in and was celebrated for his role in foiling the robbery.