
Character mistake: When Geoffrey serves tea after his sassy cough at Vivian's sentence about High Tea not being a sacred institution, the actor messes up when it's time to actually serve tea, with a napkin getting caught in the teacup saucer. Granted, accidents do happen, but it's quite uncharacteristic for the perfect butler Geoffrey is portrayed to be, and simply a flub by Joseph Marcell. (00:17:45)

Character mistake: At the end of the dance routine, all of the girls strike a pose with one hand on their hip and the other behind their head, except for Stacey who just stands there.
Suggested correction: Stacey was in New York with her father for most of this episode, so perhaps she didn't learn the entire routine before performing it.

Character mistake: Season 3, Episode 2 "Squirmy". Little Bill and his brother, Bobby are returning his pet earthworm to the soil. Bill calls his brother by the name Jamal. Jamal is Little Bill's baby cousin.

Mine Your Own Business - S1-E4
Character mistake: When Shaggy and Scooby order Sarsaparilla at the saloon, Scooby says "Two" but he appears to be holding up three fingers.

The Hairy Scare of the Devil Bear - S1-E8
Character mistake: Velma says bears only have four claws. Wrong, they really do have five claws.

Character mistake: When we first meet Gadus, he pronounces his name "Gay-dus", but later on in the episode Maran calls him "Gad-us".

Timmy the Barbarian/No Substitute for Crazy - S5-E18
Character mistake: In 'No Substitute for Crazy", When Timmy and Sanjay are leaving the school after Mr. Crocker falls down the well, a few cats come up to them and he introduced an orange one as "Omar." Later, when Mrs. Sunshine is leaving after being substitute for a day, Sanjay has cats around him and comforts "Omar", except he says this to a red cat, not an orange cat.

Adios, SeƱor Magistrado - S1-E26
Character mistake: During the tavern meeting, Sergeant Garcia calls Magistrado Carlos Galindo "Comandante."

Burple Nurples/Shnitzel Makes a Deposit - S1-E2
Character mistake: In "Burple Nurples", Chowder was selling Burple Nurples for 5 dollops each. Later, Mung Daal steals a tray of six Burple Nurples, and Chowder runs after him, telling him that he owes him 300 dollops, instead of 30.
Suggested correction: The tray had more than 6, even if it was drawn to look like just 6, they could have been stacked on top of each other. Later when they're dumped in the fire, you can see more than 6 go in. Plus at that point we don't know how much Chowder was selling them for since it was after Mung Daal (while in disguise) paid more than 5 dollops for one.

Character mistake: The title card says "Plummers Academy" instead of "Plumbers Academy."

The Blood of a Jeannie - S5-E7
Character mistake: Jeannie tells Tony that she can't blink, then immediately blinks.

Character mistake: When Matt is telling his Dad about his problems, he says "...I kicked our social studies globe last week by accent." He should have said accident; although this is not a major error it is worth noting and looking out for. (00:03:35)

Family in Paradise: Part 1 - S4-E25
Character mistake: The hunky male tour guide compliments Cissy on her brown hair when she's an obvious redhead.