The grey dot on the citrus ball constantly changed size during the whole episode.
When Jumba fell over during one of the quakes, the soles of his feet are a darker color. Then suddenly they become a lighter color.
Jumba calls Richter experiment 5-13 when he always refers to them by their 3 numbers. He also calls Stitch by his name and not 6-2-6. Jumba NEVER calls Stitch anything other than 6-2-6.
In the part where Stitch says ''cousin'' in Gantu's ship, if you look at the inside of his mouth, it's orange instead of pink.
In Spring 2004, Disney Channel ran a 'Fan-tastic Marathon' to find out the Top 10 fan-favorite experiments. 'Experiments 501 & 502: Yin and Yang' were #7 on the Top 10 list.
When Nani, David and Lilo are going to the beach, Nani is wearing her peach-colored shirt but when they're being escorted out of the beach Nani is wearing her blue crop top and she didn't bring any other clothes with her.
The FIGHTING FOUR ARMED MONSTERS book has a picture of Kixx on the cover. That's convienent.
The bottom of 625's feet (when he was eating a pineapple and peanut butter sandwich) kept changing colors.
When Jumba is scratching his first costume, his belly pops out with his belly button showing, but when he changes into his shirt, it is removed.
Pleakley's mother is voiced by fellow Kids in the Hall veteran Scott Thompson. The Kids in the Hall were notable for playing cross gender roles, so Thompson's appearance as a female character is not only not surprising, but highly appropriate. He reprised the role in Episode 13 "Fibber".
Gantu and 625 do not appear in this episode!
In Spring 2004, Disney Channel ran a 'Fan-tastic Marathon' to find out the Top 10 fan-favorite experiments. 'Experiment 300: Spooky' was #4 on the Top 10 list.
When Nani answers the door to find Cobra Bubbles (Spooky cloaked as her worst fear), she is barefoot. When Lilo jumps the imposter Cobra and Nani is trying to pull her off, Nani is suddenly wearing her sandals. After Nani pulls Lilo off and they land on the couch, Nani loses her sandals again.
Lilo's princess costume is pink. But, once she gets inside the haunted house, it changes to blue.
Lilo drags Stitch into the haunted house. If he is so strong, she shouldn't be able to do that.
Stitch is an odd shade of blue in this episode. However, this could be because it is suppose to be dark.
From the episode you'd think this is Stitch, Jumba, and Pleakley's first Halloween. However if you saw the end of the first movie you'd see Lilo and Stitch celebrating Halloween.
When Lilo is hanging from the beam, you can hear Jumba and Pleakley's voices inside but in the next scene, they walk in through the front door.
In the scene where Spooky turns into water, you can see Stitch momentarily floating to get up on the stove. Stitch is not supposed to float.
Lilo says that Hallowe'en is a federal holiday. However, Hallowe'en is not a national federal holiday, but a religious holiday for Wiccans. It is also a Celtic holiday.