Revealing: The hallway that leads to the den and the back door of the kitchen has a door at the end of it, when this door is opened we see what looks like pine trees and mountains, we know that the Stevens have neighbors on that side of the house, so that when the door is opened you can blatantly tell that it is a picture.

Continuity: In more than one episode the Steven's front door changes. In some shots the door is solid paneled but in other shots the door has a half circle window at the top. It seems the window usually appears in close up shots of people talking.

Continuity: In the early shows, the door between the dining room and kitchen is a swinging door with louvers. In later shows there is a regular sized door with partial louvers. However, after this change, there are a couple of episodes within the same season, where the regular sized louver door is a solid door with no louvers.

Revealing: When looking out of the Steven's kitchen window, the view outside changes completely during different episodes of the show.

Revealing: In several episodes, the window over the kitchen sink is shown from the outside, while snoopy people look in. The window shown in these exterior shots is far too low to be the same window that is over the Steven's kitchen sink, which is shown in many shots looking out.

Continuity: When Darrin collapses after Samantha zaps him the drink, in the next shot the glass is on the table with the straw across the top.

Audio problem: When Samantha and Darrin are at his ex-girlfriend's house for dinner, Samantha is doing all kinds of things to sabotage the dinner, even making a gust of wind come through the front door thus blowing the ex's wig off. The ex girlfriend is screaming but the screams don't match up to what her mouth is doing.

Revealing: When Gladys is looking through the window, you can see part of the facade cross bracing.

Continuity: Samantha's hair goes from neat to messy and back again during the chase scene in the alley.

Continuity: When Larry tells Darrin that he is going home, the blinds behind Darrin are shut, however in the close up of Darrin, the blinds are open.

Factual error: Samantha looks out a back dormer window to see Darrin in the front yard.

Continuity: When Dave sees Darrin's ad for the community meeting, he suggests a couple of changes, one of them being to add a line saying "and bring your friends". But the ad was shown in close-up shortly before Dave's arrival, and there was already a line saying "Be sure and bring all your friends".

Continuity: Sam gets fitted for a "new" dress that she wore in earlier episodes 7,10,and 13.

Visible crew/equipment: As Harold and Samantha drive away from the traffic jam, part of the camera rig is reflected in the side window of the car.

Visible crew/equipment: As Samantha helps Aunt Clara out of the closet, as Samantha says, "Don't go 'way!" the boom mike's shadow becomes momentarily visible at the top of the screen.

Deliberate "mistake": Sam and Darrin are "trapped" in the garage; however, you can see a side door.

Continuity: The shaving cream smears on the mirror are different in the close-ups than they are on the wider shots.

Revealing: Aunt Clara levitates her doorknob collection to put it away. As they pass in front of her, the wires used to make them levitate become visible.

Revealing: When Samantha starts trashing the private detective's apartment, she causes a chandelier to fall onto a coffee table, breaking the table. However, it is easy to see that the table breaks just before the chandelier falls on it.

Other: At the end of a scene showing the dog, the scene is reversed (mirror image) for a moment.