I nominate the first episode of Thus Spoke Rohan Kishibe to be the Official Intro To Jojo For The Busy Person. Needs no lore baggage so no getting dragged through 5 hours of Part 3 to get to the Good Shit, or worse, like 20+ hours of Parts 1 through 3. It's a pretty good representative of stand battles I think. Yes, catching popcorn with your mouth to dispel a curse is a stand battle.
Also it's a good anime, it's like a bunch of stand concepts that didn't quite make the cut for being too goth, presented in some silly Twilight Zone format. Absolutely zero Nietzsche. It's neat.
Yeah it's definitely a good introduction to Jojo. I think the only thing that's really missing is the joestars themselves, because they have very obvious protagonist energy, while Rohan is written like a particularly active side character. I know Josuke is in one of the episodes but that doesn't count, he doesn't do anything