The Scary Sky Skeleton - S1-E6
Audio problem: During the gang's ride on a bumpy road Fred warns Shaggy, Scooby, and Scrappy about some more bumps coming up. He's interrupted when they hit the bumps, then the word "bumps" comes out of Scooby's mouth.
Audio problem: In "The Robot", Gumball whimpers while his mouth is open. He whimpers again, and this whimper sounds like the first one, except his mouth is closed.
Doug Takes the Case / Doug's Secret Song - S2-E1
Audio problem: Around 3 and a half minutes into the episode, Doug, as the Chameleon, says he has a good idea as to who would've taken BeeBe's radio. The end of this sentence is very unnaturally pitched up.
Enemy Within, Enemy Without - S1-E6
Audio problem: When Alana is saying "Stay out of my way," her mouth is closed for the first three words. (00:10:47)
Audio problem: In the final scene when Cleveland says to Terry "I'm gonna get paid and you're gonna get laid", they both start cheering. But when it comes to the wide shot, Terry is still cheering but his mouth isn't moving. (00:19:55)
Midori no chikyû wa makasetoke - S1-E2
Audio problem: In the hangar scene at the beginning, Goat is talking to Akito. Seiya Uribatake in the background is arguing with his fellow mechanical worker about the reparations to the Aestivalis. The conversation happens in the back of the hangar and it is meant to be strong background noise, annoying enough to prompt Goat's reaction, but in the English dub it is so strong that quite literally most of the main dialogue is nearly inaudible because of it. The dubber also adds a surprised/scared "waah" at the end when Goat cuts him off, but that is incredibly delayed compared to the reaction of the character on screen. (00:02:35)
Guilmon Comes Alive - Part 1 - S3-E1
Audio problem: When Jeri starts miming with her sock puppet, it is sometimes out of sync with her voice. It is most noticeable in the part where Takato has detention.
Cygnus! Hyogen no senshi - S1-E3
Audio problem: To satisfy his weird mother fetish, Hyoga dives with a rose in his mouth, but that does not prevent him from shouting his battle cry. (00:07:00)
Onna no koi wa snesouyo! Kakutou shintaisou de iza shoubu - S1-E12
Audio problem: When Ranma and Akane close the door behind them avoiding the gas trap, the English dub adds a lot of coughing, even when they have their mouth closed. (00:16:40)
Yukiyasha Legend Murder Case: File 2 - S2-E15
Audio problem: Hibiki is quickly browsing through screenshots. Kindaichi yells 'Stop' when he spots a detail. Miyuki then asks about it, but her mouth is animated opening and closing a second before the voice first comes out. (00:07:35)
The Planet of Dr. Moreau - S1-E4
Audio problem: At the very beginning of the episode, the Silver Surfer emerges from a wormhole screaming "No." If you look closely as he is approaching the camera, his mouth is closed until just before he slows his approach.