Young Sean has a 'Super Saiyan Goku' backpack.
the Lobby man throwing a small ball against the wall in the big lobby and the long hallway-shots with the boy standing in the middle of them
The concert scene mirrors the one in which Redmond Barry assaults and spanks Lord Bullingdon before a stunned gathering
Obvious references: the Central Park West setting, and the short hairdo Kidman sports, as a nod to Mia Farrow's (acknowledged by the director)
mentioned once by Nicole Kidman
Clips shown for the review.
A fragment of this film is shown in this episode