This is the latter of two episodes where George Costanza mentions having a brother. He is never seen and never mentioned again.
While Kramer is in Martin's room, in order to get his vacuum back, he tells him, 'My mother's coming to visit me, she sees that rug, she's going to kill me!' But Kramer says in "The Switch," 'I haven't talked to my mother in five years.'
Maggie Jakobson (Cynthia) also worked with Jason Alexander (George) in the movie Sexual Healing (1993).
Jerry and George debate whether "timbre" is pronounced tim-ber or tam-ber. Either is correct.
When George is ranting about why he won't go out with Cynthia, Jerry and George both have belts on. However, when George comes back out from behind the wall and says, "What does she look like?" the scene changes. When the scene changes, Jerry's belt disappears!
Just before they decide to set-up George and Cynthia, Elaine is reading a newspaper. Look carefully at it, there is a section called "San Diego" in the local section which means this is an L.A. paper not a New York one (I doubt a New York paper would have a section about San Diego!)
Here's a real nitpick - submitted by viewer Daniel C. Weinblatt - the restaurant scene at the beginning with George and Jerry (when George is complaining to Jerry about his inability to find a woman)is the same restaurant George, Elaine and Jerry were at in "The Busboy" (notice the same tiles on the wall). However -- at the end of "The Busboy" the busboy comes to Jerry's apartment to thank George for getting him fired and thereby saving his life cause the restaurant burned down and the new busboy was killed in the fire. George and I need to get a life.
Goof: Kramer's line, "What-delay industries?" is delivered more as a statement than a question.
George tells Mrs Sokol that although he interviewed with Vandelay Industries, they wouldn't give him a chance. He then tells Jerry that when she calls, he should say that he's seriously considering George for the job. Well, which is it?
When Kramer comes in Jerry's apartment to ask him what he's doing Friday night, we see him swing the door to shut it and we hear it close off-screen, yet when we cut back to the door it is still wide-open.
Newman claims the incident occured on June 14, 1987, in a game between the Mets and Phillies. On June 14, the Mets actually defeated the Pittsburgh Pirates 7-3 in Pittsburgh, while the Phillies won 11-6 over the Expos in Montreal.
In the pilot episode, Jerry comments that Kramer hasn't left his apartment in 10 years but here we learn Kramer went with Newman to the Mets game in 1987.
When George runs out of the bathroom to tell Kramer to say "Vandelay Industries," he falls and drops his paper to the right of where he lies. Then, in the shot from Jerry's view, the paper has moved to George's left!
Keith makes it a point to bring his gloves, but ends up leaving without them.
George dates the daughter of an Unemployment officer. In the car, where she's telling him she no longer wants to see him, it looks alot like she's wearing the sweater that made people allergic in 'The Sniffing Accountant'.
In the end, when George bursts into Jerry's apartment asking for Keith, Jerry chuckles a bit as he says "He just left." It's sort of muffled by the audience laughter, but listen closely, it's there.
Kramer and Newman are mad at Keith Hernandez due to the "spitting" incident. Newman says that on June 14, 1987 the NY Mets played a home game against the Philadelpha Philles. But on June 14th 1987 the NY Mets were playing on on the road against the Pittsburgh Pirates.
Kramer thought Jerry might be a Nazi; however, he knows Jerry is Jewish.
This is the first time we hear Norman Brenner (Kramer's stand - in who frequently appears as an extra) speak on the show.
George last remarked "We're living in a society!" Back in "The Chinese Restaurant".