The opening sequence is also excellent. It’s packed with references to various cultural works (Spiderman, LotR, Nirvana, and a bunch of others), and I probably didn’t even catch half of them.

the ones I recognized:

Footlose

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Leon The Professional

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Dumb&Dumber

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Trainspotting

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Nirvana Nevermind Was wrong here. It was Trainspotting, which also fits better with the film setting.

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The Usual Suspects

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Breakfast Club

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The Evil Dead (maybe, its a reach)

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Lord of the Rings

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Fight Club

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Resident Evil Extinction

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Spiderman 3

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Pulp Fiction

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Wednesday Adams

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Saturday Night Feaver

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Fallen Angels

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A Better Tomorrow

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Chinatown

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Conclave

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Project A

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Ready of Not

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Blade Runner

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Coffeee and Cigarettes

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Flashdance

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Stand by Me

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The King of Comedy

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The Yellow Handkerchief

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Pierrot le Fou

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Night On Earth

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Farewell Friend

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Blue Spring

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Either way, anime YouTuber will have a field day with this one. I can't wait to see a side by side of the entire opening with the original shots.

edit: thanks to the internet sleuths I have some reference material as well and references that I missed.

Still so many scenes missing...