Continuity mistake: Clair comes into the kitchen and puts some bags on a chair. The next time they are seen they have changed position.
It's Apparent to Everyone - S8-E6
Continuity mistake: When Russell and Olivia leave, a stuffed animal appears on the table by the truck. When Clair comes in the stuffed animal disappears.
Continuity mistake: When Jake is describing the accident, he takes some glue tubs from the counter. Partway through the scene they change to glue bottles.
Continuity mistake: When Theo and his parents are talking in the kitchen, there is a box on the table. The cover is on and Theo is standing in front of the table, the next shot he is standing next to the table leaning on a box and the cover is off.
Continuity mistake: When Theo walks into the kitchen, there are two half gallons of chocolate milk on the stove. When he sees the milk and picks it up there is only one. Theo places it on the table, later the second one reappears on the stove, before he leaves Clair gives him the one that is sitting on the stove, and the one on the table disappears.
Continuity mistake: Theo walks into the living room eating a banana and holding an apple - he eats the banana throughout the scene. At one point he starts eating the apple, the banana peel disappears, and a mandarin orange appears on the couch next to him.
Continuity mistake: A root beer comes down the tube and Theo catches it. In the next shot Cliff now has the root beer. Also there are 2 root beers sitting on the table, then suddenly Theo and his friend are holding them.
Denise: The Saga Continues - S6-E1
Continuity mistake: Cliff puts his tool belt on the couch behind Denise - there is a hammer that changes position between shots.
Continuity mistake: When Vanessa and Rudy are at the table, the amount of orange juice in Rudy's cup changes a couple of times.
Rudy Spends the Night - S3-E14
Continuity mistake: Cliff puts a paper bag on the counter facing away from him, when Theo leaves it is suddenly facing the other way.
Continuity mistake: Cliff takes the empty orange juice carton out of the fridge and puts it on the stove. When Theo comes in it is now on the counter next to the stove.
Continuity mistake: When Rudy comes down the stairs and wants a lemon, Cliff is cutting one. In one shot it is fully cut. He givers her a piece of one he had cut earlier. When Rudy leaves suddenly he has a uncut lemon in front of him that he cuts.
Continuity mistake: After Clair turns off the record, the folder on the table changes position.
Continuity mistake: When Theo puts the phone down, the handset cord is next to the phone. The next shot it is now under the phone, when the phone rings it is now next to the phone again.
The Dentist - S2-E16
Continuity mistake: The amount of orange juice in Cliff's cup changes - you see him filling his cup, the next shot it is almost empty, a couple of shots later it is now full again.
Continuity mistake: The amount of milk in Robert's glass changes a few times throughout the scene in the kitchen.
Continuity mistake: At the very end of the episode Clair's glass is suddenly fuller after Denise gets done singing.
Continuity mistake: When Cliff is giving the kids their dinner, the pan cover keeps changing position.
Continuity mistake: The amount of water in Clair's cup changes a couple of times, most noticeably after Cliff tells her what she is eating, she takes a drink and the cup is about 1/3 full. She gets up to go find Theo, and now there is very little water in the glass.
Rudy's Sick - S1-E12
Continuity mistake: When Rudy is lying in her bed when Cliff is telling her about the germs in her body, her position on the bed changes between shots.
Chosen answer: That is the song "Open the Door Richard."