The door to the back room of the comics shop resembles the door of the TARDIS (with a "Police Public Call Box" sign above it) and the room turns out to be bigger than the rest of the shop.
The scene where the unemployment agent tricks Daisy by asking her a question in Vietnamese is a nod to a similar scene towards the end of The Great Escape.
When Amber runs away, a California licence plate door sign ("AMBER'S ROOM") spins on the ground, in the same way (also the same design) as the licence plate from the DeLorean does when it time travels.
Quote "I want to come back, I don't like it here anymore" recorded from a telephone call spoofs similar qote recorded from a call by Real Genius's main Character.