In Infinity War, Thanos uses the power stone against Tony Stark. Tony uses a nanotech shield to block the blast, depleting the nanobots in Tony's suit leaving the suit vulnerable to being stabbed soon after. In Avengers Endgame, Tony upgrades to Wakandan holoshields to avoid compromising the suit again.
In The 40-Year-Old Virgin, Paul Rudd wears a shirt with his photo on it. The photo came from the day they shot their work badges. The costumer printed it on a shirt on a whim and left it with the rest of Rudd’s wardrobe. When he saw it, he chose to wear it in this scene.
In 1939, Popeye color feature "Aladdin and his wonderful lamp", Popeye mumbles the line: "I don't know what to say, I never made love in technicolor before", referring to the new coloring process used in the production of the film.
In Avengers: Endgame when Captain America is going off to return the stones, the rest are expecting him to return. Bucky says his goodbye knowing Steve is not returning to his timeline, a testament to their friendship.
15The Usual Suspects
In The Usual Suspects (1995) everyone is cracking up in the lineup scene because Benicio del Toro ripped a nasty fart. Director Bryan Singer left it in the movie because he thought it showed a camaraderie between the felons.
In Avengers Endgame, during the opening scene with Clint’s Family, many birds can be heard in the background. When his family vanishes, the sound of the birds goes too.
17What We Do in the Shadows
In the movie “What We Do in the Shadows (2014)”, in the chips scene none of the vampires have a reflection on the table.
In The Flintstones (1994), during the opening sequence, when the characters go see the drive-in movie, the “Univershell” logo shows the earth as Pangea.
19Iron Man 2
In Iron Man 2 when War Machines armor is compromised the language in the suit changes to Russian.
20Stranger than Fiction
In Stranger than Fiction (2006) when Harold is thinking of Ana during his visit to HR, the cloud painting behind him begins to move, indicating his head is in the clouds.