I’ve actually just watched, in the last few weeks, every episode.
George has a lot of family who are mentioned but never seen. In the first couple of series repeated mentions are made of a brother, while in the last series he mentions an uncle.
Obviously his father and Jerry’s father are both originally played by different actors, but not the mothers.
Also, Newman is originally played by a different actor, although only his voice is heard at that time. He starts off as one of Kramer’s many unseen friends, like Bob Sacomano.
I also noticed that George is basically harmless. Elaine, by comparison, destroys the first company she works for; is suspected, albeit wrongly, of attempting to murder her next boss; and then happily embezzles from her next job.
George wanted to call his potential future child “Seven”. Jerry suggests a range of silly alternative names, including “Ketchup”. OF course there would later be a famous OWS protester called that.
I think he was also Bashir’s dad in Star Trek Deep Space Nine.
In the early series his car is frequently referenced as being off the road for some reason or other. Not being able to find the steering wheel, and so on. He also appear in court with a number of tickets, including one for not having doors on his car.
As mentioned, the nudist fixes it and later Kramer is seen to ride it, but only inside Jerry’s living room.
He first asked her if it was a New Jersey number, then he asked if he had to dial a “1” in front of it. When he found out he did, he said he was actually already sort of seeing someone. So I think the extra numbers were the bigger issue.
It’s extremely jarring, come the last series, when there’s suddenly a shot of what seems to be an actual New York street, or at least some sort of big city street. I’m think of the episode where Kramer and Newman are strapping homeless people to a rickshaw. I suppose they had to film it rolling downhill so they needed a real street.
That episode also features the return of the black Rebecca de Mornay.
George still dates some ugly girls. All very tall, though. That’s what I notice, everyone is extremely tall. Everyone on the show is very tall, other than George.