You might also find things in Jorge Luis Borges' short stories (although I can't think of any specifically off the top of my head).
The film Inception has a recursive theme to it.
And there is a popular sci-fi book called Recursion, but I've not read it so not sure how much it fits the actual idea of Recursion!
https://en.wikipedia.org/wiki/Predestination_(film)
based on the Heinlein short
https://en.wikipedia.org/wiki/All_You_Zombies
If it is than that's not a neat "recursion" with nesting but more of a spaghetti code paradox.
Another example is the prevalence of fractals in all forms
https://en.wikipedia.org/wiki/Fractal
these are motifs in nature (plant and animal structural systems not to mention hydrogeological) and seem to be common to the psychedelic drug experience but they do appear in an occasional movie set or image montage and become a theme in literature from time to time.
In my opinion it’s one of the most complex thing I have ever watched.
I don’t want to tell too much about it to keep the surprise