Continuity mistake: In the 6th season episode, "The Freak Book", when Larry first gives John McEnroe the book, it's a hard cover book with a dust jacket. At The End of the episode when Larry and John get kicked out of the Staple's Center, the book has changed to softcover.
Ted and Mary - S1-E2
Continuity mistake: At the beginning of the episode after Mary takes her shot at the bowling alley, the shot shows the scores on the screen. It shows Larry is in the 10th frame, with a strike on his first shot and a 7 on his second, with only a spare conversion of 3 pins left. Larry then says he needs a spare to win. When he goes up to shoot, there is a full rack of pins and he gets a strike, instead of shooting at the 3 pins that should have been left for a spare conversion. Also, when bowling on 1 lane as a group, you bowl 1 frame at a time. After Mary shoots, Larry should have had a full 10th frame without any shots. (00:00:20)
Ted and Mary - S1-E2
Continuity mistake: At the bowling ally, when Larry's wife picks up her shoes, the man behind the desk hands her 2 black shoes. As they are leaving, Larry's wife is wearing white tennis shoes. When they arrive at home, she is wearing the black shoes again.
The Bracelet - S1-E4
Continuity mistake: This mistake really applies to two episodes in season 1. In The Bracelet, Larry is approached by a homeless man who thanks him for the Chicken L'Orange. As a result of this (and his unkempt appearance), the women at the jewelry store will not buzz him into the store. The mistake is that Larry doesn't give this man the Chicken L'Orange until the 7th episode, AAMCO. And it is not just that the episodes aired out of order. Because in the episodes between these two, there are references that show that this IS the correct order of this season. So this becomes a circular reference that can't possibly exist.
Continuity mistake: When Larry and Jeff are at the restaurant and the waiter's arm catches fire from lighting the flambé dessert, Larry puts it out by pouring water on his arm. The wide shot shows the flambé dessert is no longer on fire. But on the next wide shot, the dessert is on fire again.
Continuity mistake: In this episode when Larry is cutting the dolls hair first he starts with a swiss army knife but while he is cutting he is using a regular pair of scissors.
Continuity mistake: When everyone is in Larry's house, sitting in the TV room and eating the brownies, the amount of brownies on the plate changes between shots.
Continuity mistake: When Larry tries on the cream jacket in Crazy-Eyes' bedroom, he drops his black jacket onto the floor. But when he leaves the room wearing the cream jacket, he grabs a black jacket from a hook near the door.
The Larry David Sandwich - S5-E1
Continuity mistake: After Larry's near-death experience, he's at a party talking to Jeff and drinking from a very small cup. At first Larry's fingers are in the handle, but when he actually starts complaining about how small the handle is his entire hand is cupped around the cup.
The Bowtie - S5-E2
Continuity mistake: In the scene where Larry is at Omar Jones' private investigation office for the last time, Jones has a thick amount of hair. In what is supposed to be moments later, when they meet outside, Jones' hair is much shorter.
The Ski Lift - S5-E8
Continuity mistake: When Larry is getting off the bed, there is a pillow on the bed in the first shot. In the next shot, the pillow is absent from the bed and present on the floor. (00:23:20)
The Ida Funkhouser Roadside Memorial - S6-E3
Continuity mistake: In season 4, episode 5, Marty Funkhouser is speaking at his father's testimonial. During his speech, he says that his mother died 10 years ago. However this episode is based around Funkhouser's mother's sudden death despite the fact that Marty previously claimed that she died more than 10 years earlier.
Continuity mistake: Larry is eating his lunch in the rabbi's office. He has a piece of chicken from a breast or thigh in his hand and in the next shot showing the rabbi he is holding a drumstick. (00:26:00)
Continuity mistake: When Larry confronts the blonde lady trying to chat and cut in the buffet queue at Jeff and Susie's party, her friend, Brian, has food on his plate initially but not in the next shot. (00:04:25)
Continuity mistake: As Leon and Larry pass the synagogue they pass the same event sign twice. (00:22:40)
Never Wait for Seconds! - S9-E8
Continuity mistake: While having brunch, Funkhouser's girlfriend's plate rotates while she puts ketchup on her potatoes. The potatoes are on the right side of the plate, then in the next shot the fruit is on the right side of the plate. (00:09:00)
Continuity mistake: Larry is sitting on the couch close to the arm, drinking wine. Susie sits down, making Larry spill his wine on the couch. Larry is now sitting in the center of the couch. (00:11:49)
Continuity mistake: Larry and Jeff are in Georgia in a rental car that originally has a California license plate on the front, but later the car has a Georgia license plate on the back and no license plate on the front. (00:05:00 - 00:20:37)
Vertical Drop, Horizontal Tug - S12-E3
Continuity mistake: Larry's holding an invoice to remove a lemon tree, then he's not, then he is again. (00:21:54)