Continuity mistake: When Elaine tells George that Jerry must go to the funeral because he could have been the one who killed the old lady, Julia Louis-Dreyfus starts stirring the beverage. The spoon is gone at the cut, and at the following cut it is in her hand, which was free just a second before. Same later when George says that the dead don't care; she is holding it over the cup, but in the next shot it's suddenly inside the cup, hands off. (00:15:15)
Continuity mistake: When Jerry says that Manya's widow is moving to Phoenix, Julia Louis-Dreyfus ' teacup turns 180° between shots. (00:16:15)
The Jacket - S2-E3
Continuity mistake: Jerry asks George in front of the fridge "You don't know Robert Schumann?"; between shots his shirt's collar is suddenly fixed, as earlier it was leaving the tie hanging out at the back. (00:05:50)
The Jacket - S2-E3
Continuity mistake: In the reaction shot with Alton Benes scoffing at George and Jerry's sissy choice of drinks, a woman with a coat in hand is walking behind him, towards the door. In the next shot, no trace of the woman, just someone in a bicolor puffer. (00:10:25)
The Jacket - S2-E3
Continuity mistake: Jerry powers out of George's grip on his arm to go to the bathroom. Notice Jason Alexander 's right arm; when he is awkwardly smiling at Elaine's dad all of a sudden the coat is entirely under it, while he had the elbow in the middle of it earlier. (00:12:30)
The Jacket - S2-E3
Continuity mistake: At the end of their strategic break in the men's room, George tosses his paper towel in the bin to the right; however the previous shot ended with Jason Alexander turning around having the towel in his left hand and glancing towards the basket on the left. (00:13:55)
The Jacket - S2-E3
Continuity mistake: Elaine's intimidating father gets up and tells Jerry and George in his gravely voice "I'm going to the bathroom." The newspaper on the table changes spot before and after said shot. (00:15:30)
The Jacket - S2-E3
Continuity mistake: When everyone gets up from the lobby seats talking to Alton, George's coat is folded on his arm in two different ways that alternate between shots. (00:17:40)
The Jacket - S2-E3
Continuity mistake: When Elaine's dad says "Pipe down, chorus boy" to George, suddenly a hotel staffer in red appears in the recess by the lamp. In another blatant continuity mistake, in the shot that follows George is suddenly without glasses. (00:17:50)
The Jacket - S2-E3
Continuity mistake: In the shot when Jerry points to Kramer where the ruined jacket is and he walks across the room to go check it out, the box of Ritz crackers is facing The Opposite direction than before, and in the following shot he is holding it in a different way too, by the top of the box instead of the bottom. (00:19:40)
Continuity mistake: George is talking about the phone call; when he says "I don't like to go too long before I ask them out", the waitress with the blue cardigan is passing behind him. At the cut, she's already to the other side of the counter. (00:02:05)
Continuity mistake: Elaine tells Jerry about the ex with the unclean bathroom. At the end she puts her lollipop in her mouth twice in two separate shots. (00:07:00)
Continuity mistake: George drinks from the bottle of anti-acid medicine, puts the lid back on, then at the "Yes, she wants me to like her" bit the lid is off again. (00:08:40)
Continuity mistake: When George shoos away everyone from The Apartment to make the phone call, in the background you can see the pink bottle with its black lid. When he actually approaches the phone, the bottle is uncapped. (00:09:35)
Continuity mistake: Jerry says he has never seen an episode of I Love Lucy in his life, then pops the cork on the wine bottle. Then it cuts to the lady and she asks, "Is there anything else about you I should know?" and the wine bottle is still on the table, corked. Then it cuts back to Jerry, and the bottle is still in his hand uncorked. (00:11:40)
Continuity mistake: During the scene with Donna and the wine bottle, besides continuity errors with cork and glasses position already mentioned in this page, the level of wine itself changes; Jerry poured wine to Donna, but her glass is empty in some shots, and before Kramer's arrival both are full, only to become empty in the last shot. (00:12:30 - 00:14:00)
Continuity mistake: Donna's purse strap changes position on The Couch throughout the scene, when she's there when George brings up her liking the commercial.
Continuity mistake: Kramer's moussed up hair looks much different in the first shot compared to the rest of the scene; it's way slicker and frizzles up right after the first cut. (00:00:55)
Continuity mistake: At Monk's, Jerry points at the woman feeding corned beef hash to her baby. There's an angle with the camera roughly behind Jerry Seinfeld's shoulder; the continuity here is sloppy, with George having his hand down flat on the table instead of with the fingers laced together with the other, and he has his right leg crossed and not the left. Just few seconds later he asks Jerry if he remembers his friend from Detroit, and he is pointing his left index finger at Jerry across the table instead, again, of having his hands close together. (00:07:30)
Continuity mistake: When Jerry's neighbours are arguing in the corridor about sponge size, Harold is holding the tiny scourer in different ways between shot (in a different spot and with his fingers suddenly stretched out). (00:08:40)
Chosen answer: George does mention his brother in the episode "The Parking Space". They actually really never mention anything that contradicts the fact he had a brother though, it just isn't mentioned.