Plot hole: In episode 416, "The Reigning Lorelai" when Emily is dialing a number for Manny Martelli, to make arrangements for the funeral, she only dials two digits. She just got the number from someone else, so there's no way it was speed-dial.

Continuity: In the episode The Fundamental Things Apply, Lorelai is in Luke's Diner talking to Luke. Lorelai is wearing a red sweater vest over a white shirt. Everytime the camera goes back to her, the left side of her collar goes from being tucked in under the vest (as if the vest were hastily put on), to being untucked (as it should be) quite a few times.

Continuity: When Rory comes into the room to answer the phone and sees Paris avoiding the call because it's her boyfriend Jamie, she empties the contents of her school bag onto the desk, including her mobile phone. Then later in the scene when Rory suggests Paris use her mobile phone to call Jamie, she pulls it out of her bag again, despite having left it on the table all but half a minute earlier.

Continuity: In "An Affair to Remember", Lorelai and Sookie take some containers out of the car and head towards Emily and Richard's door. When you see the next shot of them at the door, the containers Sookie is carrying are different from the ones she took out of the car, without her rearranging them.

Continuity: In the scene where Rory is talking to Lane on her cell phone, she sits down on a bench. On that bench is a guy reading a book. The scene shifts to Lane in Stars Hollow, and when it shifts back to Rory at Yale, the guy on the bench is gone.