Scooby-Doo and the Wonder Twins are spoofed here. The Wonder Twins appeared as sidekicks to the Super Friends from the third season through the sixth. They did not have their own show. Jana could take the shape of any animal, but Zan could only assume a form of water. The pirate ghost theme here could have come from the Scooby-Doo episode in which a phantom haunts a pirate's castle. The gang reveals that the phantom is controled by a stage magician.
One of the signs the DJ makes with his hands is the Ameslan (American Sign Language) sign for "I Love You." (middle finger and pinky bent down, the other fingers extended out)
KoRn on an extra-easy listening station?
Dr. Spookalot sounds like Skyler.
The color of the little islands on the lake change from time to time.
Kenny dies so often that the graveyard has two tombstones with his name on them. One says "KENNY 1999" (he's with his friends watching Kyle's Grandma's corpse at the time) and another, with an open plot ready, says "KENNY 2000."
Between Halloween and Christmas there are 55 days of shopping, not 72. October 14, on the other hand…
The boxed doll Cartman circles is Alabama Man, with a bowling ball on his right hand and a can of beer in his left.
Cleo Broflovski could be Sheila's mother if she is not related to Gerald.
Cleo's corpse looks like the corpe of Norman Bates' mother in Psycho.
Cartman likes to sing as he works. Here, he sings as he digs. In "Mecha-Streisand" he sang as he was picking away with his pickax.
Nibblet is named for nibblet corn. There are some similarities between Nibblet and the Wonder Twins' pet chimp, Gleek. They both find ways of getting into trouble, for one.
Now we know the name of the cemetery Kenny was buried in two years ago: Mt. Peaceful.
The delivery man looks and sounds like the one that delivered the letter concerning Sally's capture in "Not Without My Anus."
Cartman blows up the Antonio Banderas doll through the penis, but the plug appears by the left foot.
Projections should not be able to kill.
Limbo is an unusual thing for a Jew to believe in. Limbo is a Catholic concept, and most other Christians don't believe in it.
Why did Munky switch groups?
Star Wars Episode V: The Empire Strikes Back and Robocop are combined when during the closing credits, Kenny, dressed as an ED-209 unit, is taken down like an AT-AT by one Snowspeeder and destroyed by two others.
Stan begins to assert his leadership position in this episode. Kyle falls into his as right-hand man. Wendy seems to have this Halloween costume thing locked up: she wins again. Sorry, Kenny.
Cartman sings the following:
"Santa Claus Is Coming To Town"
"Jingle Bells"
"Sleigh Ride"
"Silver Bells"