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I have my own personal headcanon that in the star trek universe Human musicals are EXTREMELY popular amongst the stars and across all galaxy's. Cause sure, other aliens have singing and dancing and music of all sorts but everyone quickly agrees that there is nothing like a human musical. It baffles a few Ferengi's ears when hoo-mans sing in such a high frequency for such a long time that shouldn't even be possible with their lung size! Vulcan's can appreciate the synchrony of their dancing and consider it a very pleasing experience (Their incredibly impressed by it and it becomes a frequent topic of conversation). Cardassian's admire the way the characters sing/talk to the audience and reveal what their feeling but not to the other characters, it's fun to watch secrets unfold or explode to someone's face as chaotic antics happen all around them (Their favorites tend to be Stephan Sondheim musicals). Surprisingly, even Klingons aren't immune to the talent of human musical theatre, on any given night you'll see a large group of Klingons sitting around a table ready for an opera show and tales from soprano's receiving numerous thanks and glory be's! from burly Klingons after a show.
Idea that once human movies and tv series becomes accessible to the rest of the universe they immediately have to get re-called and re-regulated by the federation.
Like, the Andorians thought they had sexy romance shows, but then the terrans come along and now you've got angry zhavey's, shreya's, charan's, and thavan's calling in concerned on what their teenagers are watching.
And this especially applies to horror movies, Klingon space gets access to some classics and figure they'll sit around and laugh at the silly human horror. Cut to one Texas Chainsaw Massacre marathon later and now some human captain's are reporting that the Klingons are looking at them weirdly, like they almost seem... nervous of them?
Same thing goes for when Vulcans begin to approach human crewmates to ask how they manage to keep their children away from "The animated blue kanine and the female pink sus scrofa domesticus?"
Ferenginar just has a flatout ban against any and all talent/contest shows. To win profit just for having a talent? For showing good teamwork? Without any cheating or lying? Disgraceful media. (Although they would appreciate the trick of adding a sob backstory to gain more sympathy votes)