Continuity mistake: When Sam is looking for Darrin to tell him the good news, Aunt Clara walks into the living room holding the large book with its cloth bookmark hanging over the top front of the book (facing Sam), but in the next shot the bookmark has switched to hanging over the top back of the book (facing Clara). (00:13:40)
Continuity mistake: When Rodney is at the bottom of the stairs announcing phase 1 of operation breakup is a success, Samantha is at the top of the stairs. The camera edit is really bad and Samantha jumps forward about 3 feet.
A Very Special Delivery - S2-E2
Continuity mistake: When Darrin and Samantha are in a bar with a man eating popcorn. The place mat changes position and the drink moves closer to the man from one shot to the next.
Continuity mistake: When Aunt Clara tells Sam not to worry about Darrin because she has her book of spells, there's a closeup of the book with its binding facing left and Clara pointing to the large title "Spells and Incantations" on its cover, but in other shots Clara's holding the book with its binding facing right (we see Vol. 7 on the binding) so the cover is facing the opposite way, and there is no title on the cover. (00:14:00)
Continuity mistake: Aunt Clara crashes into the pagoda and is helped up by Darrin and Samantha. They head inside and you can see Aunt Clara's purse sitting in the pagoda to the bottom left. But when all three enter the house, Aunt Clara is now carrying her purse. (01:14:00 - 01:20:00)
Continuity mistake: In "Double Split" Larry says that he gets hives when he plays golf. In following episodes, Larry Tate golfs with Darrin, and feels fine. (00:24:20)
Answer: Larry had been telling Darrin what it means psychologically that Samantha gave the coat away. Larry said giving it away meant she's happy being married but if she liked the coat it means she desires to be single and carefree. So when Darrin sees the coat, he immediately thinks Samantha doesn't want to be married and the fact that she twitched it means (in his mind) she wants to be a single, carefree witch again.
Bishop73