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.
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oh yeah not shitting on part 1, though I do think that the highly conceptual/gimmicky stand battles are probably what most people would want to show to their friends when introducing JJBA.