Continuity mistake: Smithers is shown in Bart's Nightmare with green hair, instead of the grey hair he is usually seen with in the show.
Continuity mistake: Principal Skinner is shown in Bart's Nightmare with very tan skin and brown hair, instead of the yellow skin and grey hair he is usually seen with in the show.
Shaun the Sheep Movie
Star Trek III: The Search for Spock
Star Trek: Nemesis
Mad About You
Star Trek IV: The Voyage Home
10 biggest mistakes of 2017
A new menu and more - thoughts welcome...
25 biggest mistakes in classic Disney movies
First pictures of Josh Brolin as Cable for Deadpool 2
The biggest mistakes in Spider-Man: Homecoming