"Martha" scene in Batman v Superman: Dawn of Justice - The revelation that both Batman and Superman's mothers were named Martha and their subsequent realization of their shared humanity fell flat and seemed forced.
"Space Leia" scene in Star Wars: The Last Jedi - The scene where Leia is sucked into space and then miraculously survives and uses the Force to fly back to the ship felt out of place and undermined the established rules of the Star Wars universe.
"Spider-Man Dancing" scene in Spider-Man 3 - The infamous scene where Peter Parker dances down the street in a jazzed-up outfit was seen as cringeworthy and unnecessary, detracting from the overall tone of the film.
"Shower Scene" in Psycho (1998) - The decision to recreate the iconic shower scene from the original film shot-for-shot in this remake was seen as unnecessary and detracted from the overall quality of the movie.