Live Alone and Like It (a.k.a. An Unexpected Song) - S1-E19
Continuity mistake: Lynette opens the door while she has sunglasses on. Then she is holding her glasses. It never showed her taking off her sunglasses. (00:13:20)
Other mistake: Throughout the sixth season Eddie Orlofsky attends school with Porter Scavo, and Danny Bolen, witch means they must be close in age. However, in season 6 episode 20, it is revealed that Eddie was in high school the same time as Danielle. This does not make sense due to the fact that while Danielle was in high school, Porter and Preston were about 10.
Continuity mistake: In season 1 it's revealed that Lynette and Tom first met when working for the same company, and Tom left his girlfriend for Lynette. In season 7 it's stated that they were already dating in college, and Tom betrayed Lynette with her friend Renee.
Other mistake: In season 3 it's revealed that Mike Delfino's doctor at the hospital is Ida Greenberg's nephew. When Ida dies in season 4 her only distant relatives come from another state, and there's no trace of her nephew from Fairview.
Other mistake: Lynette is talking to Susan about Zach's infatuation with Gaby. Susan asks how Zach can afford so many expensive gifts for Gaby, to which Lynette replies that he inherited his grandfather's money when he "turned 18, a month ago." However, in the previous episode, Zach reminds Gabrielle that he is two months older than John Rowland, who, it was mentioned, turned 18 in season 1, two years before.
Continuity mistake: Susan's house is burned down by Edie towards the end of season 2, but at the beginning of season 3 the house is exactly as is back to normal and as it was before the fire.
Visible crew/equipment: When Karen McCluskey was stepping from the car when she was taking Bree Van de Kamp to the hospital the crew members appear in the mirror.
Visible crew/equipment: Just before the fire starts you can see a crew member's legs/feet on the right side of the couch. (00:38:06)
Secrets That I Never Want to Know - S8-E1
Character mistake: When Gabby and Bree go to move Gabby's stepfather's car, they realise his car is a stick shift and Gabby says that she has driven a stick shift only once in high school. This is incorrect, as in season 7 episode 8, Gabby has to drive Hector's car home, which was also a stick.
Factual error: When Gabrielle becomes a widow she marries Carlos again in front of a priest. But the Catholic Church doesn't admit divorce, so in their eyes Gabrielle and Carlos were still married. They should have repeated a civil wedding, since only the civil effects of marriage were ended with their divorce.
Other mistake: Lynette says "I also have a 9 year old", but on Penny's birthday not long before that she turned 11, and the only younger sibling Penny has is the baby.
Suggested correction: And in the episode with Penny's 11th birthday, her parents forgot it was her birthday and in the last minute of planning, her birthday cake said "Polly." Hard to say if it was intentional to show what kind of mother she is or accidental/bad script writing.
Literally addressed in the show, she said she put the wrong name because they had been discussing the name for the baby.
Continuity mistake: At the end of the previous episode, an unknown someone can be seen circling Dylan's face on a picture of her and Katherine in the newspaper reporting on the Founder's Ball. In this episode, we see the cop who pulled Dylan over get back in his truck where a copy of the newspaper sits on the passenger seat. This time, both Dylan and Katherine are circled.
Continuity mistake: Lynette climbs on the bed to speak to Tom and is wearing black soled shoes. After they finish talking she is on the bed barefooted. (00:37:34 - 00:38:25)
Continuity mistake: When Mrs McCluskey is talking to her sister on the coach, she has a plate of food in her left hand and some papers in her right. When Roberta rips the papers out of her hands, the plate of food is gone and is replaced by a sandwich.
Continuity mistake: When Mrs. McClusky originally comes to the door to tell Andrew about Bree being laid out on the lawn, the cover to the dial for the sprinkler system is open. In the next scene, when Andrew goes over to turn on the sprinklers, the cover is closed.
Revealing mistake: When Felicia pulls the urn of Beth's ashes out of the bag in the house, Harriet Sansom Harris' left hand is briefly visible, including the fingers that Felicia is supposed to be missing.
Now You Know - S4-E1
Continuity mistake: When Bree grabs the old lady's wrist to keep her from touching her belly, her thumb is on the palm side of the lady's wrist. Then when the shot changes, Bree's thumb is now on the back side of the lady's wrist.
Audio problem: When Gaby's charity modelling event takes place and Susan, after being roughed up by John Rolland's mother after mistakenly accusing her of sleeping with her son, Tom starts talking but you can see him in the left corner of the scene without his mouth moving at all.
Revealing mistake: In the opening scene with Tom and Lynette, Lynette is standing in the doorway to her house but the interior in the background is different to the interior of her house. there is a blue wall in place where an open plan stair should be. (00:01:00)
Continuity mistake: When Lynette is sitting on the bench chatting to Claire in the park, you can see that Lynette has her hand on the pram, but when the camera angle is behind Lynette in other shots, she no longer does.