Jessica's First Christmas - S2-E7
Visible crew/equipment: When Frank is loading the lorry at the warehouse, he drives the forklift onto the lorry, then the lorry drives off while he and the forklift truck are still on the back. As the lorry pulls away you can see the camera crew on the other side of the road filming the next shot.
Jessica's First Christmas - S2-E7
Other mistake: When Frank open his front door to Mr. Jackson the walls around wobble.
Jessica's First Christmas - S2-E7
Revealing mistake: When the second piece of scenery falls on Frank, it has a tear halfway down and a hole in it that Frank's head goes through. A few seconds earlier, these weren't there. Maybe they were put there to make sure Frank's head went through, or else this is the second take.
Jessica's First Christmas - S2-E7
Deliberate mistake: Just before father O'Hara explains to Frank why he isn't in the nativity play he says to Betty "Perhaps I will have that cup of tea after all Mrs. Spencer" Betty goes to the kitchen but father O'Hara never gets his cup of tea.
Suggested correction: Perhaps Betty just forgot.
Jessica's First Christmas - S2-E7
Revealing mistake: At the final rehearsal for the church nativity play when Betty first comes on stage with baby Jessica wrapped up in a blanket and places her in the manger, it is obvious that Jessica is actually a doll.
Jessica's First Christmas - S2-E7
Continuity mistake: When Frank is demonstrating his star trap to Father O'Hara, Frank comes up through the stage floor too fast and grabs hold off a length of material stretched across the top of the stage which falls down onto the stage floor when Frank falls, but in the following shots of the scenery collapsing this piece of material has disappeared.
Jessica's First Christmas - S2-E7
Revealing mistake: The walls of Frank and Betty's bedroom wobble when the door is shut.
Jessica's First Christmas - S2-E7
Visible crew/equipment: When Frank asks Jackson if he can work the crane, there is a boom mike shadow on the wall to their left.