The star door Scott and Ramona go through during their first date is a reference to 1996 Super Mario 64 game which also act as portals, albeit not to a 20-somethings room in the game. Also, the number Ramona gives Scott after their date is a real 212 area code for New York which gets used a lot in films the same number appeared in Spielbergs 2005 effort Munich and the rom-com Definitely Maybe.