Season 1
In 1:1 Good News, Bad News (The Seinfeld Chronicles Pilot), Jerry calls Kramer Kessler (*and in TV guide he’s Hoffman)
Season 2
In 2:1 The Ex-Girlfriend, Kramer says that Joe's Fruit allows returns, but in 5:1 The Mango, Joe’s fruit doesn’t allow returns
In 2:9 The Deal, the door is ajar, then closed, and yet again ajar
Season 3
In 3:4 The Dog (October 9, 1991), Elaine shouldn’t know how Jerry throws up, she’s only been there for 6 years and he last threw up 13 years ago from 5:9 The Masseuse (June 29, 1980) OR Elaine should know and call Jerry’s bluff because she did see him throw up in 1987. However, as we realized during the 3rd Siyum, it is possible that Elaine actually saw the dry heaves, which can be mistaken for throwing up, as Jerry explains to George in 5:9 The Masseuse. In case you were confused, as I was, here are the relevant episodes with their relevant information: 3:4 The Dog = Broadcast October 9, 1991, Elaine has been here since 1986, making it 6 years, '86-'91, so sometime within that span of years, both George and Elaine thought that they had seen Jerry throw up; 5:13 The Dinner Party = Broadcast February 3, 1994, Jerry mentions not throwing up since June 29th, 1980, and says 14 years down the drain; 5:9 The Masseuse = Jerry says he hasn't thrown up since June 29, 1980, which he calculates to be 13 years, and the time before that, June 29, 1972, where George was present and therefore did see an actual Jerry vomiting. George then tells Jerry that he saw him vomit in 1987, but Jerry corrects him, saying it was the dry heaves. This leaves us with a possible error or the possibility that Elaine had also seen Jerry doing the dry heaves and Jerry happens to throw up similarly to his dry heaving, thus making George think that Jerry vomited in 1987, when it was the dry heaves, b/c he actually did see him throw up in 1980.
In 3:13 The Subway, they take the 6 train from Monk’s. Jerry lives on West 81st Street, Monk’s is on 112th & Broadway, neither of which is near the 6 train. Bunch of other subway errors, as there are in many of the episodes. We are still formulating a list, so come back soon for the complete list.
* In 3:21 The Letter, Elaine claims that she is supposed to go to Lippman’s son’s bris, yet his son is 13 in 9:3 The Serenity Now, when he should be 6 years old. (One possibility of this not being an error is that Lippman might have two sons 7 years apart, 13 and 6 years old respectively in Season 9)
Season 4
In 4:22 The Handicap Spot Jerry says we’re going to the mall in Lynbrook, there is no mall in Lynbrook.
Season 5
In 5:1 The Mango, Joe’s fruit doesn’t allow returns but in 2:1 The Ex-Girlfriend, Kramer says he does
In 5:7 The Non-fat Yogurt Kramer is laughing at the idea of people wearing name tags, yet in 6:17 The Kiss Hello he loves a
similar idea
In 5:9 The Masseuse (June 29, 1980) we have another error in that in 3:4 The Dog (October 9, 1991), Elaine shouldn’t know how Jerry throws up, she’s only been there for 6 years and he last threw up 13 years ago OR Elaine should know and call Jerry’s bluff because she did see him throw up in 1987. However, as we realized during the 3rd Siyum, it is possible that Elaine actually saw the dry heaves, which can be mistaken for throwing up, as Jerry explains to George in 5:9 The Masseuse. In case you were confused, as I was, here are the relevant episodes with their relevant information: 3:4 The Dog = Broadcast October 9, 1991, Elaine has been here since 1986, making it 6 years, '86-'91, so sometime within that span of years, both George and Elaine thought that they had seen Jerry throw up; 5:13 The Dinner Party = Broadcast February 3, 1994, Jerry mentions not throwing up since June 29th, 1980, and says 14 years down the drain; 5:9 The Masseuse = Jerry says he hasn't thrown up since June 29, 1980, which he calculates to be 13 years, and the time before that, June 29, 1972, where George was present and therefore did see an actual Jerry vomiting. George then tells Jerry that he saw him vomit in 1987, but Jerry corrects him, saying it was the dry heaves. This leaves us with a possible error or the possibility that Elaine had also seen Jerry doing the dry heaves and Jerry happens to throw up similarly to his dry heaving, thus making George think that Jerry vomited in 1987, when it was the dry heaves, b/c he actually did see him throw up in 1980.
In 5:13 The Dinner Party both day and night simultaneously and also look at the previous error which involves this episode.
In 5:17 The Wife Kramer says he only takes baths, but in 7:16 The Showerhead he says that baths are disgusting
In 5:22 The Opposite George says he travels with the team on all the road trips yet we never see him leave NYC
Season 6
In 6:11 The Switch Kramer says he hasn’t spoken to his mom in 5 years, but he has done so 2 other times within the last 3 years
In 6:17 The Kiss Hello we have another error in that in 5:7 The Non-fat Yogurt Kramer is laughing at the idea of people wearing name tags, yet here he loves a similar idea
In 6:19 The Jimmy both Georges are supposed to eat lunch at night
In 6:22 The Diplomat’s Club, Elaine flashes back to Mr. Pitt’s cameo as Hitler, when she wasn’t even there
In 6:23 The Face Painter, George says he never said I love you to a girl before, but does so in 2:1 The Ex-Girlfriend
Season 7
In 7:2 The Postponement, the credits read Rabbi Glickman, while Elaine calls him Rabbi Kirschbaum
In 7:6 The Soup Nazi, the street toughs names are Bob and Ray while in 7:9 The Sponge and 9:20 The Puerto Rican Day, they are named Cedric and Bob
In 7:9 The Sponge, we have the above error.
* In 7:10 The Gum, George is bringing Christmas gifts to his perents, who shouldn’t celebrate Christmas, but Festivus, as cited in 9:10 The Strike
In 7:10 The Gum, George says his car is an ‘83 LeBaron, but it’s an ‘89
* In 7:10 The Gum, Deena doesn’t know Jerry, yet went to high school with George
* In 7:13 The Seven, a night shot of the apartment, when it should be Newman’s east wing
In 7:16 The Showerhead, we have another error in that in 5:17 The Wife Kramer says he only takes baths, but here he says that baths are disgusting
Season 8
In 8:10 The Andrea Doria, night shot of Jerry’s apartment while sorting Newman’s mail, and then daytime outside the window
In 8:19 The Yada Yada, Whatley correctly states that the Jewish people have lived for 3,000 years, yet Jerry corrects him incorrectly and says it’s 5,000
In 8:20 The Millennium Jerry’s phone number starts 742 yet in previous episodes it starts 555
In 8:21 The Muffin Tops Kramer shows Jerry his chest hair, and it scares Jerry because it was so dark and thick, yet in many episodes Kramer has his shirt off and it’s normal, and Jerry doesn’t freak out from it
Season 9
In 9:1 The Butter Shave, the two NBC Executives are named Stu Crespi and Jay Chermak, which are the reverse of the other episodes there characters are in
In 9:2 The Voice, Mr. Thomassoulo says he saw George holding a 200 pound motorized cart with one hand, when it was actually done with 2 hands
* In 9:3 The Serenity Now, we have another error in that in 3:21 The Letter, Elaine claims that she is supposed to go to Lippman’s son’s bris, yet his son is 13 now, when he should be 6 years old. (One possibility of this not being an error is that Lippman might have two sons 7 years apart, 13 and 6 years old respectively in Season 9)
* In 9:10 The Strike we have another error in that, in 7:10 The Gum, George is bringing Christmas gifts to his perents, who shouldn’t celebrate Christmas, but Festivus
In 9:20 The Puerto Rican Day, we have another error in that in 7:6 The Soup Nazi, the street toughs names are Bob and Ray while in 7:9 The Sponge and this episode they are named Cedric and Bob
Season 3
In 3:15 The Suicide Kramer knows all about comas, but in 8:13 The Comeback he did not know you can come out of a coma
Jerry’s place has an address of 137, not 129 - 3:16 The Fix Up
Jerry’s home phone number in 3:17 The Boyfriend Part 1 is the same number as Jerry’s car phone number in 3:11 The Alternate Side
DeSoto did not find Mississippi River - 3:18 The Boyfriend Part 2
Lippman says “Her daughter”, not “His daughter” in 3:21 The Letter
Season 4
In 4:17 The Outing, Estelle says that the super had to pick her up off the floor, when they live in a house.
Season 5
In 5:11 The Conversion, Tawni is living in Newman's apartment
Season 8
In 8:11 The Little Jerry, they say it’s 3 AM, yet it is daytime outside
Kramer claims in 8:13 The Comeback that he did not know you can come out of a coma, while in 3:15 The Suicide he know all too
well about comas
In 8:21 The Muffin Tops, Kramer uses a raisin bagel to make the pizza bagel in this episode, but in 9:10 The Strike, he doesn't know what a raisin bagel is when he comes back to B&H
Season 9
In 9:19 The Maid, Kramer is calling from 1st and 1st and claims there is an Original Ray's Pizza there. Thanks to Ander, we know this is not true.