there's ~~!podcast@feddit.de~~ (German, so probably not helpful), !podcasts@lemmy.ml, !movies@lemmy.ml, !entertainment@beehaw.org and probably a lot more.
If you have trouble joining any of these, you can always search for the link on your server and the server will look them up.
Also there is a tool that has all communities in one place: https://browse.feddit.de/ But then you have to search for the name anyways ;)
Is that a start?