Desperately Seeking Serena - S1-E15
Continuity mistake: When Dan is going to Serena's hotel room to find out why she haven't gone to the exam, he talks with her in front of the door. His hands are on Serena's neck, but the hand moves between shots,and is under Serena's hair. (00:36:55)
Desperately Seeking Serena - S1-E15
Continuity mistake: When Nate and Vanessa kiss for the first time, two lighting screens are reflected on the glass door.