Revealing mistake: When everyone is supposed to be frozen, the neighbor girl standing behind the car can be seen moving her hand onto the car. This happens as Monica says "I'm not afraid of you, Wanda." (00:24:25)
Filmed Before a Live Studio Audience - S1-E1
Continuity mistake: Wanda and the nosy neighbour are in the living room going through the preparations for 'some' special occasion. During their conversation, the position of Agnes' hands on the magazine changes (she is holding a page with her left or not) and same for Wanda's hands on the notepad (look at the cut when Wanda says "Just out of curiosity, what does it say?"). (00:08:20)
Filmed Before a Live Studio Audience - S1-E1
Continuity mistake: While the Harts sit down to eat dinner, Mrs. Hart puts her wine glass on the table. But then Vision pulls the chair for Mrs. Hart, revealing the wine glass in her hand. (00:17:57)
Continuity mistake: Vision and Wanda are in bed(s). When she mentions possible rumors about people moving objects "without touching them" look at her arms; the right arm is crossed over the left. Next shot and and they switched position; the left is on top. (00:02:15)
Continuity mistake: Wanda just found the toy helicopter in the shrub. Agnes surprises her; from the front, her left hand has the pinky finger sticking out and the thumb curled, but in the reverse shot the fingers are bent differently. (00:07:45)
Continuity mistake: At Dottie's, when the ladies start saying in unison "For the children", Wanda is caught off guard with her hand on her mouth. But which hand? The right hand in the wide shot, the left one in close-up. (00:10:40)
Continuity mistake: When Dottie calls Glamor and Illusion back on stage at the end of their performance, at the words "On behalf" she is holding the trophy with the right hand under its pedestal, which turns into the left hand in close-up. (00:25:40)
Now in Color - S1-E3
Continuity mistake: Vision is speaking with the doctor after the visit to a 4-months pregnant Wanda, When he asks him to be discreet because he wants to keep the news in the family, he has his hands on his hips. The doc answers "Mum is the word!" and Vision's hands are clasped together, and they switch back and forth again as the camera angles alternate. (00:04:05)
All-New Halloween Spooktacular! - S1-E6
Continuity mistake: Wanda is spooked by the sight of Pietro transfigured into a corpse. He then asks her if she's okay; Wanda has one hand or both hands in front of her mouth, and they change position between shots too. (00:24:35)
Factual error: Wanda's father opens his briefcase of DVDs and one of them is Malcolm in the Middle. But the bomb that killed him fell in 1999, and Malcolm in the Middle didn't start airing until 2000.
Chosen answer: The living painting is taken straight from the Family Ties intro.
BaconIsMyBFF
Ah, that makes sense - I first saw this one on Youtube, which at a guess was the first season or an early version? https://www.youtube.com/watch?v=GPRdtO6UKD0. But yeah, this is exactly right: https://www.youtube.com/watch?v=ip1szfz9nZ8.
Jon Sandys