Continuity mistake: After Herman breaks through the doors in the opening sequence, the underlying wood over the right side of the hole is plain plywood. When it's Lily's turn to come out, the wood has been stained to match the rest of the door, and Herman's outline is more distinct.
Revealing mistake: When the show introduction focuses on the front door, the Frankenstein sized and shaped cut out area can be seen where Herman is to make his appearance.
Herman's Child Psychology - S2-E1
Continuity mistake: At the end, as the family sits at the table, Herman's napkin alternates between being flat and half folded.
Herman, the Master Spy - S2-E2
Continuity mistake: The trawler is visible after Herman goes out, then gone when Lilly scans for Herman.
Herman, the Master Spy - S2-E2
Other mistake: The Russian trawler shown appears a lot closer than three miles out. At that distance from the beach it would be very small in size, if visible at all, and then only if an observer had binoculars or telescope.
Herman, the Master Spy - S2-E2
Audio problem: Eddie urges Grandpa to get going, when he replies, his mouth doesn't match the words.
Visible crew/equipment: As Lily opens, then closes, the door to the dungeon, the wire to assist in the action is plainly visible on the corner closest to the wall.
Continuity mistake: As Chester walks in the front door, the newspaper he holds jumps from his right hand to under his right arm.
Will Success Spoil Herman Munster? - S2-E12
Visible crew/equipment: After Herman pulls the cord to close the coffin phone, as it closes, the shadow of the boom mic is on the wall at the top of the shot.
Revealing mistake: As Herman stands on the porch after Spot runs off, he stomps his foot. As the light fixture hits him on the head, it's obvious that the person hit was his stunt double.
Herman's Peace Offensive - S2-E15
Revealing mistake: When Herman punches the wall, his fist goes through the facade, and after he pulls his hand out, the support structure can be seen.
Herman Picks a Winner - S2-E16
Visible crew/equipment: As Herman approaches the crowd watching him walk down the side, you can see the wires holding him.
Herman Picks a Winner - S2-E16
Visible crew/equipment: As Grandpa the bat flies off, a boom mic is in the scene at the top. Also, when Herman is walking down the building, his shadow plays across the background scenery.
Herman Picks a Winner - S2-E16
Continuity mistake: The pill Grandpa the bat brings Herman goes from round to oval between shots.
Continuity mistake: After Herman wakes Lily and she scolds him, he closes his magazine with the front cover toward the camera. A second later, the magazine's back cover is facing out.
Continuity mistake: In the kitchen, the popover trays alternate between half empty and full between angles.
Herman, the Tire Kicker - S2-E28
Continuity mistake: The semi trailer the crooks used to get the cars away is way too short for all the cars put into it. As each car goes in, it disappears.
Herman, the Tire Kicker - S2-E28
Visible crew/equipment: As Herman and the salesman walk to the convertible, the shadow of the boom mic can be seen coming toward the camera on the right side of the frame.
Herman, the Tire Kicker - S2-E28
Revealing mistake: As Herman lifts the VW Beetle, the shadow of the lift arm can be seen on the ground under the left side of the car.
Revealing mistake: After the car hits Herman, it falls apart. After the left front tire falls off, the prop holding up the frame is plainly visible.
Answer: The comedic gimmick of both "The Munsters" and "The Addams Family" television shows in the 1960s was that both families were convinced they were normal and everyone else they encountered was odd. The Addams Family, for example, thought their "normal" visitors were mentally unbalanced because they always fled the Addams' weird home in panic. That was a running gag throughout the entire Addams Family series, so much so that easily half of nearly every episode was devoted to the predictably terrified reactions of their visitors (always accompanied by identical canned laughter). Meanwhile, in the Munsters' universe, the family thought "normal" people were physically deformed and even quite hideous. For example, the Munsters believed that their beautiful niece, Marilyn, was socially handicapped by her ugliness (the exact opposite of the truth); and, in the episode "Just Another Pretty Face" (S2E17), when Herman Munster was temporarily transformed into a "normal" person, his entire family found him utterly repulsive. The family's hidden revulsion to "normal" people was the running gag of The Munsters.
Charles Austin Miller