SPOILER WARNINGS

Black Widow : Nat watches James Bond Moonraker. It features a space station, a ruthless villain and a freaky henchman. Hmmm...

Midsommar : "Don't forget those Swedish girls we're gonna impregnate"

Black Mirror : San Junipero . Early on Yorkie is seen playing the old Bubble Bobble video game. A gamer explains to her that the game has multiple endings.
https://www.youtube.com/watch?v=9TgKuJxaWQU (2.11 mark)
In solo mode the game reminds you "this is not the true ending! Don't forget your friends! You will be impressed by the truth of this story!"
Dual player mode we learn : (4.05 mark) Happy End! Congratulations! You found the most important magic in the world. Its love and Friendship! "

It fits well with the plot of the episode. After Yorkie passes over her afterlife feels incomplete until Kelly joins her. SJ and Bubble Bobble may be computer generated worlds but the love and time Yorkie & Kelly have with each other is REAL. I wonder if the writer knew this?

Other examples?