The director sprinkles his work with references to the films he loves. That's probably why the barbershop sequence in The Irishman ends with a shot of flowers reminiscent of Vertigo.

This article contains spoilers for

The Irishman (2019)

Shutter Island (2010)

The Departed (2006)

The Aviator (2004)

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Gangs of New York (2002)

Casino (1995)

Goodfellas (1990)