First became aware of this watching Roger rabbit as a kid. Bob Hoskins was stuck in an animated pigs head in the ad but not the film.
Also. Escape from LA. AJ Langer shows off her lingerie lingerie.
The predator. Day time battle featuring Nebraska firing a mounted gun and Humvees being smashed.
Infinity war. Cheat scene showing hulk racing into battle.
Terminator dark fate
Grace's hand on Dani's shoulder. The hand was digitally erased in the film.
Others?