When Rory goes to her dorm to study, and Paris isn't answering the phone, Rory empties her book bag, noticeably putting her cell phone on the desk. Later when she's going to give her cell phone to Paris, she picks up her bag, reaches in, and pulls it out for Paris to use.
At the beginning of the episode, during Friday night dinner, Rory can be seen sitting very close to Richard in the close-ups, but in a wide shot she can be seen sitting towards the middle of the table.
While talking to Kirk during Kirk's date in the diner, Luke reveals extensive knowledge of the movie Pretty in Pink (1986). Yet in the previous episode, "The Fundamental Things Apply," Luke demonstrated that he had seen very few movies and is mostly uninterested in them.