The core idea is that smaller non-Hollywood production locations will find a lot more actor recycling, creating a collection of shows filmed in the same neighborhood and seemingly "sharing" 90 percent of the same actors for guest roles. Basically an expanded form of Production Posse. This is seemingly most notable with Vancouver, BC because of the volume of content relative to the actors (both Canadian productions and outsourced Hollywood productions). It can also be applied to companies, as they do have a shortlist of actors they will lean on to fill last minute spots.
That said, there is a lot of sloppy, zero context examples. Ideally there would be a collection of shows filmed around the same time and then a Long List of actors shared between them.
Edited by EmeraldSource on Dec 29th 2022 at 7:06:03 AM
Do you not know that in the service one must always choose the lesser of two weevils!
♀ | Small ripples lead to big waves
I believe the original name of the trope waaaay back in the day was Only So Many Equity Members, referencing the British context rather than the Canadian one.
Edit: And that trope redirected not to this one, but to the former Hey Its That Guy before it was cut. Before then it looked like this
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Edited by MorganWick on Dec 30th 2022 at 1:22:31 AM
Only So Many Canadian Actors is a trivia item about how countries with relatively small populations have a limited pool of actors. Most of the on-page examples are just work names and nothing else, because it's hard to give any more context than, "it sure does have all those Vancouver actors". I think it should really be a useful note, if the concept is even noteworthy.