When Rory covers Lorelai, a book is in Lorelai's hand and Rory puts the blanket over the book. When Lorelai wakes up, the book is on the back of the sofa.
During fall semester, Mr. Medina mentions that the next AP English exam is in a few weeks. AP exams are only offered in May.
Rory stops at the stop sign that shows it facing the same direction as the Jeep is facing, making the wrong side of the sign facing the driver.
In the last scene, when the girls come home from Chilton after walking around looking for the deer, as they enter the house, you can see a person's elbow stick out from the right side of the screen.