Could be from a show and/or movie.
I’d have to go with Bladerunner, Firefly/Serenity, Alien, and Predator (they all have the Weyland-Yutani corporation and some have crossovers). Wouldn’t mind seeing a nicely done mash-up show or movie of that (but it would probably end up being a mediocre action sci-fi).
Scooby-Doo and Johnny Bravo.
phineas and ferb’s powers included combining the tri-state area with star wars and marvel.
The Critical Role episodes that carried over into official DnD lore.
Tap for spoiler
Arkhan the Cruel, played by Joe Manganiello, helped the party defeat Vecna and while they were celebrating he stole Vecna’s Hand. That is why in (I think) Descent to Avernus he now officially has the hand while residing in Avernus. I guess he still has it while Baldur’s Gate 3 runs.
X-Files / Simpsons