Films and shows which tell the story of how they themselves were produced
In The Office (US version) it is revealed that the mockumentary the viewer watches does in fact exist inside the universe. Dunder-Mifflin crew is even interviewed as stars of the show and Pam has a thing for the boom mic operator who worked on the set.
Netflix' Tick tick boom is based on an eponymous theatre play, which told the background story of the shows creative process. Its main character is a fictional version of the creator, Jonathan Larson.
Season 4 of the Arrested Development revolves around Michael getting release rights from his family members to create a show based on their story from seasons 1-3. He even hires a fictitious version of Ron Howard, who is the real show's director.
Marvel's She-Hulk ends with the main character discussing the corners cut during production with a fictionalised version of Kevin Feige.
These are for examples that I could come up with from the top of my head. Can you think of any other?
Didn't Stargate have a show inside the show called Wormhole Extreme or something like that? And Peter DeLuise who directed Stargate was the director on the fake show as well.
The Japanese film One Cut of the Dead: I don't want to explain too much, but if you want a movie that takes this concept to the furthest degree then you should check it out.
I thought it was interesting that Modern Family was sort of presented as a reality show, but as far as I can remember, they never showed any of the crew/interviewers.
Episodes (starring Matt LeBlanc as himself) is very much up this alley. It's a show about two British TV writers adapting their big BBC hit for American TV. It's also one of the more underrated shows out there, I don't see a lot of people talking about it and frankly it's excellent.
One Cut of the Dead is one that comes to mind, you can watch the zombie movie at the start, and then the rest of the movie is the crazy things that went on in the background to make the movie. It's a lot of fun.
The third one also includes the director of the series, Tom Hopper, being invited to see the “real life” human centipede, only to be horrified by what his movies inspired in “real life.”
The Muppet Movie is all about the Muppets meeting and trying to get to Hollywood to become movie stars. At the beginning and end you see the Muppets in a theater watching their own movie.
Actually a lot of other Muppet content is similarly meta.
The Wizard of Speed and Time is a feature-length indie film about the creator's struggles with creating the original short film that inspired the movie.
Teen Titans Go! To the Movies is about the Teen Titans going to Hollywood to try and get their own movie.
Trailer park boys regularly address the film crew. In one of the later seasons Tom Arnold plays himself as a superfan of the show, and geeks out over the characters
Wow...meta overload! 🤯 So mainstream is Postmodernist self-reference that it's no longer even recognized as such, it's almost banality. Maybe the owls really aren't what they seem after all?