Carmela calls Meadow's friend Hunter "Cacciatore" at one point. Cacciatore means hunter in Italian.
The artwork Tony stares at when with Irina, is a rough copy of David Hockney's "A Bigger Splash."
Adriana's job as a hostess is referenced in the dialogue. Drea de Matteo appeared in the pilot as an unnamed hostess before being cast in a recurring role as Christopher's girlfriend.