When in Rome - S1-E3
Character mistake: Nobody in this scene knows how to dance the tango that is playing. (00:16:35)
Hookers, Hookers, Hookers - S8-E4
Character mistake: Gordon says that he never had sex with anyone Alan knows, yet in Season 3 he briefly dated Rose and according to Rose also had sex with her.
Character mistake: Geraldine's name changes from "Boudicca Geraldine Granger" to "Geraldine" but with multiple middle names from Mary Poppins with the surname "Granger."
Character mistake: Lucy Liu-bot says Fry's name normally, but uses an automaton voice for "Can eat more", when she has always used Fry's name as a Text-to-speech type of automaton voice. (00:07:45)
Character mistake: When Estelle gives her guest speech about the Tuskegee airmen she shows a slideshow. There is a photo of an airplane that she incorrectly labels as "a single engine P-47." This is not correct. The plane in the photo is a P-39 Airacobra. (00:19:45)
School Elections & Talent Show - S1-E8
Character mistake: There is a campaign poster that reads, "Vote for Ned or Your Dead." "Your" should be spelled "You're."
Character mistake: James mentioned to Florida that he always knew his father was alive (after claiming to Florida he was dead in the past). But since James hasn't seen or heard from him in 35 years, there would really be no way for James to know that his father was still alive for sure - more like just a guess than certainty.
Invasion of the Ferb Snatcher/Ain't No Kiddie Ride - S2-E28
Character mistake: In 'Ain't No Kiddie Ride' Carl reminds Major Monogram that he has no sense of smell and that he was born without nostrils noting it on his resume. But in 'Brain Dead' when Major Monogram sees Perry wearing a face mask he points out that Carl is also a germaphobe. Carl corrects him saying "It's not the germs sir, it's the garlic smell." He wouldn't be able to smell anything since he has no nostrils. (01:10:00 - 01:35:00)
Character mistake: When Clark flies to see his parents for the first time, he is wearing a maroon shirt and jacket. When he lands at his parents farm he is still wearing his jacket and maroon shirt. In the next shot, he has taken his jacket off which now has a rip in the shoulder, as he enters the house his shirt is blue, and then in the following shot at the table having dinner his shirt is again maroon. (00:30:00 - 00:30:50)
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.
Episode #3.6 - S3-E7
Character mistake: Shaun Foster Conley is credited as "Himself". Himself has been misspelled "Himslef".
Character mistake: The Captain's medal ribbon bar is sewn onto his uniform back to front, with the 1939-45 Star on his left and the 1939-45 War Medal on his right.
Suggested correction: This is explained in the final episode, as he took somebody else's medal ribbon bar in order to get into an event only open to "decorated" officers and hurriedly put it on the wrong way round. However, this is also a mistake. Although the Captain never left Britain, he would still be entitled to the War Medal and Defence Medal, so would legitimately have two of the ribbons he wears. And having campaign medals does not make one "decorated" in any case.
Character mistake: Mr. Lucas got himself in an embarrassing situation 'straightening the seams' of Mrs. Slocombe. Humphries passes by saving him by telling him that Mr. Granger wanted to talk to him, but he does it by saying "Griffin wants you." Wrong name. (00:07:45)
Pearl Harbor - S6-E3
Character mistake: Nostalgia Critic states that once Affleck goes to the war, he spends his time in "fighter jets." But while saying this, shows him in a WWII propeller powered fighter plane. (00:11:10)
Character mistake: When talking to Will on the phone, Grace misuses the term "pied-à-terre" (which means "apartment" in French) instead of "pas de deux" (a dance for two) while describing the delicate and complex nature of a relationship between two gay men. When Will points out her error, she says she knows what pied-à-terre means because she took Spanish in high school. However, in season 1, episode 20 ("Saving Grace"), Grace correctly and easily used the term pied-à-terre while showing her sample book to a potential client.
Character mistake: Lorraine mistakenly tells Denny to "call 999" instead of 911, and when asked about it by Katie, denies having ever spent time in the UK (later revealed to be a lie). But this isn't some high-pressure slip of the tongue, she's highly intelligent and has been in America for a decent length of time, is working hard to maintain her facade of being born and bred American, so there's no way she'd slip up over such an obvious thing.
On a Wing and a Prayer - S4-E7
Character mistake: FO Woodham drops James in Darrowby. James gives a proper RAF salute (palm forward). Woodham responds with a US style salute (palm down).
Character mistake: Considering she was wearing heeled boots, Ms. Underwood should have either taken her shoes off or at least have had a carpet provided to her if she was going to sing on the competition mat, as her shoes could have torn it. Other than emergency medical professionals, anyone who is going to step on the mat should remove their footwear.
Character mistake: Rufus says "That was before I found out you raped my 14 year old daughter." referring to Jenny. Jenny, in previous seasons is 15. Jenny was born in 1993, and season 4 was filmed in 2010, making Jenny 16 at least. (00:25:35)
Suggested correction: In this scene, Rufus saying, "my 14 year old daughter..." was referring to Jenny's age at the time Chuck tired to force himself onto her (beginning of the first season), not her current age in season 4. Jenny was 14 in the beginning of season 1.