Michel complains that the front desk has not arrived yet and is seen sitting on the floor of the Dragonfly. However, in the previous episode Afterboom (2004), Lorelai is seen working at the front desk while Michel give a press tour of the Inn.
When Lorelai visits the diner in the morning, she tells Luke that "the water pressure sucks in rooms 10, 12, and 15." However, in Chicken or Beef? (2003), she says the Inn will have only 10 rooms.
The episode opens with Lorelai seeing cats on her porch in the morning and it is light out. The next scene is Lorelai sitting on the steps of the diner in the dark at 5am. We know it is the same day because in a later scene which supposedly takes place later that day she tells Luke "Cats came to my house today."
When Lorelai, Michel, Sookie and Jackson wake up after sleep with the zucchinis the herbal remnants on their hair change between shots.
In the wide shot when Lorelai, Sookie, Jackson, and Michel are lying looking at the stars, Lorelai is lying a bit away from Jackson's feet which are crossed, whereas in the close up of Lorelai, she is close to them and a foot was sideways on the ground.
When Professor Fleming is lecturing in class, he raises both hands, and a gold band can be seen on his left ring finger. His character is not supposed to be married. Although he is British, and they may say it's just a regular ring since Europeans sometimes wear wedding rings on their right hand. More than likely, the actor, who is married in real life, forgot to remove his ring.
Paris doesn't seem to know what angina is when Asher Fleming experiences it, despite being pre-med.