Mistakes during This is Halloween:
- In some shots, The One Hiding Under Your Stairs looks like he is wearing a sweatshirt,whereas in others he doesn't.
- During the line "filling your dreams to the brim with fright", the bats that Oogie Boogie turns into have their strings showing.
- When Jack Skellington is walking up Spiral Hill, the light used for the moon can be seen.
- Sometimes you can see the stick used to make Zero fly around.
- When Jack is on the pole in Christmas Town,the strings for his puppet are revealed.