The Cosby Show

Theo's Flight - S3-E7

Audio problem: When Cliff asks Rudy what's her boyfriend's name, you can hear a man off-camera saying "Bud" before Rudy answers.

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mirtom

Happy Anniversary - S2-E3

Continuity mistake: Cliff says "a young trumpet player while sitting in the bandstand watching the dancers". But in all the later episodes, Russell plays the trombone, and he had been for a long time.

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Slumber Party - S1-E22

Continuity mistake: After Cliff talks to Peter, Theo is told to run to the neighbors across the street. However, he can be seen in the background of some shots when the twins do their game. As soon as the twins finish, Theo is shown coming back into the house.

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For Men Only - S8-E9

Factual error: When Olivia (or whoever) is teaching Russell how to play the Nintendo game she tells him the controls and includes "C and D". The old Nintendo system had no C or D.

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An Early Spring - S2-E21

Continuity mistake: In this episode, Rudy is riding her bike around the house which is right on the corner of a block. Since when is their house on the corner?

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Bowling255

Halloween - S2-E6

Revealing mistake: When Robert grabs Scott's shirt, Scott hits the wall and it moves backwards about an inch showing that it's fake.

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mirtom

Period of Adjustment - S7-E4

Continuity mistake: When Pam is in the office talking to Cliff and he tells her about the curfew time, she has a pencil in her hand and a pad in her lap. In the next shot, Cliff offers her a pencil and tells her to take the pad (which is on his desk).

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mirtom

Cliff's Wet Adventure - S6-E9

Continuity mistake: When Cliff returns from the store for about the fourth time and the eggs and tomatoes fall out of wet bag onto the floor why aren't the eggs in a carton? The bottom of the bag drops out, so the carton can't be in the bag.

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Bowling255

Denise Kendall: Babysitter - S6-E6

Continuity mistake: In the scene where Bob gives Elvin the apple cider and another jar, when you first see the two jars, the jar in his left hand has a few inches of foam on the top. Bob sets the jars on the table, and the foam is gone. When the shot returns to the table the foam is back again.

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Show generally

Revealing mistake: Everytime someone opens the front door to go outside there is just steps leading outside, but when they are on the steps outside and the doors to the inside are open there is a wall and a table with a lamp. Inside that is not there.

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Pilot - S1-E1

Deliberate mistake: In the very first episode, the kids are fighting and arguing all throughout the house. Claire then asks Cliff, "Why did we have 4 kids?", referring to Denise, Theo, Rudy, and Vanessa. In all of the following episodes, they actually have 5 kids. I guess they decided to add Sandra (the oldest Huxtable) later down the road.

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Show generally

Other mistake: The outside shots show that the house is in the middle of a row of houses, connected to other houses on both sides. But in the living room, behind the stairs, is a window looking outside. There couldn't possibly be a window there as that is where the house shares a wall with the house next door.

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And So We Commence (1) - S8-E24

Plot hole: When Theo is complaining that his father is inviting too many people to his graduation, he says "I saw him in the backyard 5 minutes ago hosing down the beach chairs", but this couldn't have been possible because in fact, Cliff was upstairs right before that scene, and then went straight to the living room, so there's no possible way that Cliff could have been in the yard at the time Theo had said he was.

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Pilot - S1-E1

Continuity mistake: The father was known as Clifford in the beginning but the name was changed to Heathcliff (you can see this on the nameplate for his office).

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Father's Day - S1-E13

Other mistake: It is daylight outside when Cliff and Clair are talking, but when he turns the lights off to try on his light-up Father's Day gifts, it gets pitch black in the room.

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mirtom

War Stories - S3-E11

Continuity mistake: Towards the end of the episode, Cliff Huxtable is sitting in the living room with his father Russell, Sgt. Stokes, and Homer. He is telling them of an incident that happened while he was in Bermuda. He is using dominoes to explain his story. At first there are about six or seven dominoes standing up on their sides. The camera angle switches, and all the dominoes are flat on the table. It goes on for a minute or so with the dominoes lying flat on the table. Then when Russell, Sgt. Stokes, and Homer get up to go for a walk, the dominoes are standing up again.

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mirtom

Eat, Drink and Be Wary - S8-E16

Continuity mistake: This episode was obviously filmed before the kitchen was re done, but was aired after that.

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JuliaD

Pam Applies to College - S8-E4

Visible crew/equipment: If you look carefully, at the very top of the screen, during the scene where Olivia is telling the Huxtables that she didn't get to do her show-and-tell at school, you can see the microphone appear very briefly.

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mirtom

Rudy's Walk on the Wild Side - S6-E18

Character mistake: At the beginning, when Vanessa is begging for money from her dad to buy a CD, Cliff says she can clean the garage. But the Huxtables live in a brownstone townhouse and brownstones do not have garages.

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mirtom

Back to the Track, Jack - S1-E20

Character mistake: When the race ends and the kids are cheering, you can hear Denise call Cliff "Bill" instead of "Dad".

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mirtom

Denise's Friend - S2-E11

Visible crew/equipment: Look closely when Clair gets up after saying to the kids "I'm glad we had this chat", you can see a tip of a camera on the right.

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mirtom

Cliff's Mistake - S4-E4

Audio problem: When Rudy and her friends make a recording of spooky noises, then play it back while trying to scare Cliff, the noises on the tape go on much longer than when the kids recorded it.

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mirtom

Cliff in Charge - S3-E12

Revealing mistake: Rudy snatches a hat off Kenny's head and she says the line: "Gimme back my hat Bud!" At same time, you can see the actor who plays Kenny silently mouthing the line with her.

xx:xx:xx

Theo and the Kids (2) - S7-E26

Other mistake: After the commercial, when Olivia and her friend are watching TV, they look at each other and laugh, obviously on cue. They weren't even looking at the TV and started laughing at exactly the same time.

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mirtom

Some Gifts Aren't Deductible - S8-E23

Revealing mistake: When Stanley comes into the kitchen he has three demands, on paper from Deirdre, to which Kenny must agree. After Stanley reads the demands, Kenny signs it. You can plainly see that the paper is blank the moment after he signs it and gives it back to Stanley.

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mirtom

Monster Man Huxtable - S3-E13

Continuity mistake: At the end of the episode, Theo and Cliff are drinking a soda. Cliff pours half of his in a glass and begins drinking it. When the camera pans for the end of the episode, the bottle that cliff set down is once again full.

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mirtom

You Can't Stop the Music - S8-E22

Revealing mistake: Glue can be seen on Kenny's forehead after the carrot has been removed.

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mirtom

Breaking With Tradition - S1-E6

Continuity mistake: Theo and Cliff walk into the kitchen and Cliff sets the basketball on the counter. Theo walks upstairs. When the camera is back on the counter the basketball is gone.

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mirtom

A Girl and Her Dog - S3-E10

Continuity mistake: When Vanessa walks down the steps and drops all her papers, they are shown on the steps, then off the steps and then on again.

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mirtom

Pilot - S1-E1

Continuity mistake: After Theo gives up an extra $100 for clothes, he is holding $300 left in his hand. However when the camera switches back to Cliff, who asks how much is left, it switches back to Theo, who is only holding $200 left.

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mirtom

Slumber Party - S1-E22

Other mistake: During the scene where the twin sisters were singing their song, Theo was asked by Cliff to go to Peter's house and ask his mother if he could stay. Theo left immediately after this. But if you look closely while the twins are singing, you'll see Theo's arm in the scene. When the twins finish performing, they sit down. After this, you see Theo coming through the door after having just gone to Peter's house.

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mirtom

Trust Me - S4-E21

Continuity mistake: Cliff and Clair are talking in the living room while Cliff is making a sandwich. As Clair asks Cliff if he would trust her with a sexy man, Cliff starts putting potato chips on his sandwich from a bowl. As he takes the chips out of the bowl, the level of chips goes down. When Cliff asks Clair if she would trust him with a nineteen year old woman, the bowl is miraculously at the level it was at the beginning of the scene. But as Cliff finishes talking, the bowl is back to it previous level.

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mirtom

I Know That You Know - S3-E21

Continuity mistake: In the scene where Theo tries to prank Cliff, and Theo grabs the fake gum, he stuffs the "Bag 'o' Gags" under his shirt. You can see throughout the scene that Theo is holding up the bag with his hand. Later on in this scene, the bag drops. In the next shot, there is something green showing from underneath Theo's shirt (The Bag 'o' Gags). Then in the next shot it is hidden again, being held up by Theo's hand.

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Rudy Suits Up - S2-E7

Factual error: When Clair and Denise are watching the Bears vs. the Giants game, they comment on how cute player number 16 is. In 1985, nobody wore 16 for either the Bears or the Giants. Former Bears' placekicker Bob Thomas wore it from 1975 to 1984 until he retired. 16 wasn't worn again by the Bears until Tim Lashar, another kicker, wore it in 1987. Also, 16 had long since been retired by the Giants. It was last worn by Frank Gifford.

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mirtom

Clair's Reunion - S8-E20

Continuity mistake: At the beginning of the episode Cliff starts to cut up the sleepover treat, a couple of shots later Olivia's friend says "I knew we should have done this upstairs" - it is now uncut and Cliff starts cutting it again.

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Bowling255

Cliff Gets Jilted - S8-E18

Continuity mistake: Rudy takes the coat from one of the kids and puts it on the back of the chair Cliff is sitting on, at one point it falls off, it then reappears behind him, then moves to the table next to him.

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Bowling255

Two Is a Crowd - S8-E11

Continuity mistake: When Vanessa and Dabnis are talking, Vanessa sits down and takes off her coat - it falls down behind her. For the rest of the scene the coat appears and disappears on the chair behind her.

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Bowling255

For Men Only - S8-E9

Continuity mistake: When Russell is teaching Olivia and her friend how to play "pick up sticks," part way through the sticks at the end of the table close to Olivia disappear.

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Bowling255

The Iceman Bricketh - S8-E7

Continuity mistake: Clair comes into the kitchen and puts some bags on a chair. The next time they are seen they have changed position.

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Bowling255

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.

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Bowling255

With This Ring? - S8-E1

Visible crew/equipment: A boom mic is visible as Cliff gets off the couch and says "I know one thing, they are not going to live here."

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Bowling255

Cliff and Jake - S7-E24

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.

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Bowling255

Theo's Final Final - S7-E14

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.

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Bowling255

Theo's Final Final - S7-E14

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.

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Bowling255

It's All in the Game - S7-E5

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.

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Bowling255

Surf's Up - S6-E2

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.

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Bowling255

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.

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Bowling255

A Room With No View - S5-E23

Continuity mistake: When Vanessa and Rudy are at the table, the amount of orange juice in Rudy's cup changes a couple of times.

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Bowling255

Mrs. Huxtable Goes to Kindergarten - S5-E14

Continuity mistake: In the previous episode they got a new couch, in this episode the old one is back.

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Bowling255

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.

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Bowling255

The March - S3-E6

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.

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Bowling255

Mother, May I? - S3-E5

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.

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Bowling255

Denise's Decision - S2-E25

Continuity mistake: After Clair turns off the record, the folder on the table changes position.

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Bowling255

A Touch of Wonder - S2-E18

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.

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Bowling255

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.

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Bowling255

Vanessa's Bad Grade - S2-E14

Continuity mistake: The amount of milk in Robert's glass changes a few times throughout the scene in the kitchen.

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Bowling255

Cliff's Birthday - S1-E24

Continuity mistake: At the very end of the episode Clair's glass is suddenly fuller after Denise gets done singing.

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Bowling255

Clair's Case - S1-E19

Continuity mistake: When Cliff is giving the kids their dinner, the pan cover keeps changing position.

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Bowling255

Clair's Case - S1-E19

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.

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Bowling255

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.

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Bowling255

Mr. Fish (a.k.a. Goodbye, Mr. Fish) - S1-E2

Continuity mistake: While some of the family is eating, the cup in front of Denise disappears than reappears.

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Bowling255

Mr. Fish (a.k.a. Goodbye, Mr. Fish) - S1-E2

Continuity mistake: During the scene when Cliff is explaining to Rudy that her fish is dead, the fish food disappears at one point then reappears.

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Bowling255

Two Is a Crowd - S8-E11

Continuity mistake: At the end of this episode, when Clarie enters the kitchen and closes the doors behind her, they are left a bit open. They remain open while Vanessa and Dabnis also enter the kitchen to say goodbye. When they leave and Clarie asks Cliff something, the doors are now completely closed.

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JuliaD

Waterworks - S4-E18

Continuity mistake: Rudy blows bubbles in her milk and the bubbles rise above the glass. The shot changes to Vanessa and when it goes back to Rudy the bubbles are gone.

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JuliaD

Birthday Blues - S5-E22

Plot hole: At the beginning of the episode, Theo, Vanessa and Rudy all act as if they forgot Clair's birthday. But Rudy already had a present for her mother's birthday, the pendant she ordered in the episode, "Cyranoise de Bergington".

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mirtom

Denise Kendall: Babysitter - S6-E6

Revealing mistake: When the power came back on and everything started running at once, the food processor was still running after the lid blew off of it.

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mirtom

The Locker Room - S4-E12

Continuity mistake: There are two jackets hanging (one pink on top of one blue). When we see Vanessa and her friend, Janet, fighting Theo to get through the door, the pink jacket obviously falls down. When Dr. Huxtable comes in, the jacket is seen hung up again, but when he leaves, it is on the floor again.

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mirtom

With This Ring? - S8-E1

Character mistake: Elvin has to sit on a stool at the dining room table and remarks that they are all out of chairs. But when Clair and Vanessa go into the kitchen to talk, there is an empty chair sitting by the kitchen table.

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mirtom

Cliff Gets Jilted - S8-E18

Character mistake: When Dabnis and Vanessa first enter, Vanessa can be heard saying. "Hi, Grandpa. Hi, Rudy," when she is greeting Grandpa and Olivia.

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mirtom

Twinkle, Twinkle Little Star - S4-E15

Continuity mistake: In the opening scene, Vanessa pours a full glass of milk. In a shot a few seconds later, she is pouring the same glass about 1/4 full.

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mirtom

Home Remedies - S7-E21

Character mistake: Rudy says that the last time some of Anna and Russell's friends visited them was during their 50th anniversary, and she got rich because they gave her money. In the actual episode of the Golden Anniversary however, the only guests at Anna and Russell's dinner party were the immediate family and Elvin.

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mirtom

I'm `In' With the `In' Crowd - S6-E3

Continuity mistake: When Vanessa calls home and Denise picks up the phone, there is a cord attached to it. At first it's behind Denise's hand, then it's in front.

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