Visible crew/equipment: When Kakihara and Karen are walking up the stairs at the apartment building and the camera is following them, you can make out the shadow of the cameraman on the actors and the walls several times.
Visible crew/equipment: Near the end of the movie after Ichi cuts Kaneko's throat and he is crawling towards his son Takeshi, you can for a brief moment see the tube with which the fake blood is pumped to his throat.