The Crab with the Golden Claws: Part 2 - S1-E2
Other mistake: The newspaper article that features Tintin and Captain Haddock at the end of the episode is a flipped shot, as shown by the text that has been reversed. (00:43:35)
The Karate Kid Returns - S6-E14
Other mistake: When Tim and Wilson are talking about The Beach Boys song lyrics, Wilson says he wrote a book called 'The Psycho-Physiological Indices of Amorous Connections Among Termites of the Southwest' that sold four copies. In an earlier episode called Wilson's Girlfriend, the woman Wilson dates also says she wrote the same book with the same number of copies sold.
Other mistake: A time card reads 6,000,002 BC, when it should've read "60,000,002 BC". (00:07:12)
Stranger at the Gates (Part 1 of 2) - S2-E3
Other mistake: In a previous episode ("A Breath of French Air") Ma explains to a french fisherman that she's used to cooking fish as the Larkins have both a pond and a river near their home. In this episode Montgomery complains that there is nowhere around for him to fish.
Other mistake: When Kooky's machine throws King Koopa into the cockpit, the top is transparent. (00:08:18)
The Retainer - S1-E2
Other mistake: The gas chamber is destroyed when the dogs pull a chain that's attached to its front support but it somehow collapses from behind. (00:19:07)
Other mistake: Ben's van has the name of BH Porter Heating Repairs with phone number on both sides and the back door, however in the opening credits it does not appear on the back door.
Real or Robots/Special Delivery - S1-E9
Other mistake: Before Tommy and Chuckie climb up back on Stu's bed position, Stu's hair is orange, just like Chuckie's.