Continuity mistake: When Alan first meets Rose, she eventually says "He (Charlie) has a very musky scent" with her head turning to look at Alan. When the camera cuts to Alan, he says "uh huh" and Rose is all of a sudden looking straight ahead. (00:10:40)
The Price of Healthy Gums Is Eternal Vigilance - S2-E6
Continuity mistake: When Jake asks Alan if kicking Charlie in the nuts would make things even, Alan sets a ketchup bottle down with the lid open. In the shot after Alan says no, the lid is closed. (00:17:55)
I Can't Afford Hyenas - S1-E14
Continuity mistake: After Berta tells Charlie he owes her $74 for groceries, she walks to the table and says 'funny story' with Charlie facing the coffee machine with his head facing towards it. When the camera cuts to another angle, Charlies head is all of a sudden in a different position with no time to have made the move. (00:01:50)
Bad News from the Clinic - S2-E5
Continuity mistake: At the very beginning, Alan and Charlie are at the table talking about the woman Charlie is seeing. When Alan asks "at a leisurely pace or if you were developmentally challenged?", Alan is picking up a glass about to take a drink. In the next cut from behind Alan, he is now eating a fry. After Charlie says "Aren't you clever? Bite me", Alan has the glass back in his hand.
Arguments for the Quickie - S3-E23
Continuity mistake: During Jake's and Charlies argument about when Mia called, the reindeer hat that Charlie takes off Jake's head changes places and disappears during cuts.
Enjoy Those Garlic Balls - S2-E2
Continuity mistake: After Alan takes Judith's "Harper's" doormat, Alan and Charlie go to the bar where Alan breaks the neck off the giraffe. The pieces of the giraffe change spots multiple times throughout cuts from Charlie and Alan.
The War Against Gingivitis - S9-E18
Continuity mistake: At the beginning after Waldon's ex-wife video calls Waldon about Billy, Waldon goes outside to the balcony and screams. When Waldon screams, there's a cut to Alan by the sink where he also screams, breaks a plate and drops a green towel on the floor. The next cut after Alan, is Waldon coming back inside and Alan asking "Are you all right?" Look in the background and the green towel is all of a sudden folded and hanging on the side of the sink.
Continuity mistake: Towards the end of the episode, Alan and Jake return to their hotel room with a bucket of chicken and sit side by side. Once they start talking about opening a restaurant and naming it, the bucket gets noticeably closer to Alan's left arm between cuts from him to Jake.
Continuity mistake: While Evelyn is at Charlie's asking Alan if he's considered that there may be another man at Judith's "shacking up with her," Evelyn is wearing a blue 2-piece skirt suit, but in Charlie's close-up Evelyn's wearing a white suit with a red floral pattern when she's standing in front of Charlie, at the left side of the screen. (In the original pilot Evelyn is played by Blythe Danner wearing the floral suit, but she had to back out and was replaced by Holland Taylor, who's wearing the blue suit).
Rough Night in Hump Junction (aka His Ugly Bundle) - S5-E15
Continuity mistake: When Charlie is with Mia and her father comes in, she's saying: "Daddy, this is Charlie, remember I told you about him." Back when Mia and Charlie were dating, he actually met Mia's parents at least twice.
Bad News from the Clinic - S2-E5
Continuity mistake: After Charlie steals Jake's fries and asks him to squirt some ketchup on them, the bottle moves around the table between angles.
Continuity mistake: When anyone goes to Alan's room in Charlie's house, they always exit/enter from the left of the room entrance (when they exit the go left and up the hall then make another left). This doesn't match the floor plan of the beach house though, as the living room has been shown to be more straight out of the room.
I'd Like to Start with the Cat - S6-E15
Continuity mistake: When Chelsea and Charlie are in the coffee shop talking about how they're doing, Charlie is drinking a cappuccino-type drink with caramel or some type of syrup or drizzle on the inside of the glass. Once Charlie says something along the lines of "She's a real ball buster, I can't get away with anything", the camera cuts back and forth between Charlie and Chelsea and with each cut, the amount of caramel on the inside of the glass increases and decreases.
818-jklpuzo - S7-E1
Continuity mistake: Charlie tells the psychiatrist that apart from being constipated everything is fine and the house is paid off. However later on when Walden moves in, it is said there are three mortgages on the house which Alan can't afford (which is why Walden moves in in the first place).
Continuity mistake: While Alan's sitting on the couch, Evelyn's talking to Alan "helping...through a very difficult time," and in the shots facing Alan all of the books on the table behind him, and also the books on the couch's side table keep changing - not just their position, all the books actually become different books. Additionally, in the shots facing Charlie, the books beside the chair and the books/CDs/DVDs on the bookcase change as well.
I Merely Slept With a Commie - S4-E17
Continuity mistake: When Charlie is talking to his mum after meeting her new people, Evelyn's hand constantly changes position.
Kinda Like Necrophilia - S5-E10
Continuity mistake: As Alan runs away screaming about betrayal, Berta begins to pour Charlie a cup of coffee. Charlie's first two or three fingers are hooked through the handle of the cup. The shot changes and Berta is still pouring but now Charlie's index finger is alongside the rim of the cup.
Continuity mistake: What Isabella is doing with her hands at the start keeps changing. (00:02:10)
Chosen answer: Alan might have thought the bra was too fancy to belong to a regular woman, "I'd love to meet the girl who filled this", he says. He assumed it was one of Charlie's many women.
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