* Not all the actors and actresses who were ever on Seinfeld appear on this list, but only those who were actually seen in other movies or TV shows.
* In all cases, the actors and actresses have been seen by chance and on regular TV broadcasts.
* We haven't necessarily seen the full movie. It is possible, therefore, that other Seinfeld actors may have appeared in the same film. But if we don't get to see them, they don't appear on the list.
* We've taken to IMDB just to confirm it was them. Always after seeing them, never before.
* There are at least two unnamed characters on the list (the trumpet player and the elevator man) who appeared in other shows, but are not listed in any database.
* We never set out to make an exhaustive list or website. Everything is the product of chance and the few hours a week that we spend in front of the television.
* Sometimes, we spot a Seinfeld actor in a movie whose name we don't know. In that case we try to identify another known actor and then look up the two names on IMDB. Thus we get the name of the movie. But we never go to IMDB before.
The rules
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