After Kenny gets carried away by the ambulance, the cosmonauts are still in the Mir (which is still on fire).
How did the EMTs get to Kenny so quickly? They must have seen the station fall and responded to the impact.
The Morgue
Since when did Jackie Collins start writing horror?
Wendy is telling Stan why she came as Chewbacca and not Raggedy Ann. Most of the class has Chewbacca masks on, but you can still see the clothes. Thus, judging by the clothes, Fosse is seated behind Wendy before he comes in with Bill moments later to make fun of Stan.
Mr. Hat's eyes are in the normal position on his head, not on top of the hat's rim.
Cartman's mom puts up a Nixon poster on her door to scare people. His house has a "visitor" spaceship crashed halfway into the roof, and an alien peeking out from the ship's belly to assess the damage. Parker and Stone must have been to Fry's Electronics in Burbank, CA.
I'm gonna make a new costume during recess - I could swear the kids are having lunch right then. Do they have lunch first, then recess? The statement makes no more sense if the kids are at recess right then.
Kenny's right arm falls off in class, but is back on at lunch. But then he turns to bite Clyde, and the right arm is gone again. When the boys go trick-or-treating the missing arm switches from left to right when the boys reach the fat man's house ("Let's Get Physical").
The Principal
The Newscast
If that's Stan's house that the zombies are destroying as the kids pass by, Stan makes no mention of it. A lot of houses in South Park look alike.
Jimbo and Ned are on the roof of the left-side store while the zombies are rioting downtown.
10465 (The number on Chef's house) - South Park must have a stretch of road that goes this high, not likely in a small town like South Park. It is a number you might find in Westwood, CA., where South Park was produced until recently. Now it's in Marina del Rey (The King's Marina).
Chef's chair is adorned with naked, greenish women (Capt. James T. Kirk once made love to a green woman in Star Trek). There's a picture of two naked women, symmetrically posed, hanging above his stereo.
The bottom-right corner of "Crack Whore" Magazine says "Back Do' Ho. Five on One Action!" The magazine title goes from "Crack Whore" to "Naughty Mom" for a monent, when Chef approaches Stan.
The brand of Worcestershire Sauce Marty spreads on his hot dog is Limey Charles, but by the time Chef finds it, the brand name is gone. Worcestershire Sauce's Hot-line number is 1-800-555-5633. Numbers with prefix 555 don't exist, which is why they are permitted for use on TV and movies. Also, Worcestershire here refers to the type of sauce made from a Worcestershire recipe, not that the company that makes the sauce in in Britain. And even if it is, it could have an American subsidiary or distributor for whom an 800 number would be valid.
A pay phone in the middle of a cemetery? And it seems Kyle can use it without putting any coins in.
evilkenny sent in this one: for a split second, Kyle's hand holding the Worcestershire Sauce is shown in close-up. His mittens are green at that moment instead of white, which they are while Kyle is in costume.
Cartman and Stan are shredding up dozens of Zombies, there's blood everywhere, but Cartman doesn't get stained. He must be a Teflon ghost.
Wendy is surrounded by dismembered corpses, and she says "Barf is gross"? I guess that America's youth really is desensitized to violence. On the other hand, it's the small things that matter.
Since when does Kenny get a funeral, a grave stone, and mourning from the other 3 over his death?
This is the only episode one sees Kenny's mouth in, usually in the act of biting another person.