Initially, there wasn't a bedroom set for Jerry's apartment. One was made for the second season. This explains why Jerry's bed is in his front room for one scene in season one, episode one, "The Stakeout".
Here's to those who wish us well, and those who don't can go to hell.
In some episodes, when exterior shots of the fictional "Monk's Diner" are shown on two sides, you can see the real name, Tom's Restaurant.
In the season 2 episode "The Apartment", Michael Richards is credited twice in the opening credits.
In the episode "The Summer of George" some scenes were edited for TV screening but were aired in full in foreign countries during reruns. Extra footage included more dialogue between George and a shop assistant with regard to party invitations, Jerry and his girlfriend discussing who would look after her shopping the coffee shop and a couple more lines between George and Jerry near the end of the episode as George lies in a hospital bed.