This marks the first appearance of Tyler Blackburn (Caleb).
When Simone is talking to Aria she mentions making her turn off "The OC" Ashley Benson (Hanna) was in an episode of "The OC"
When Lucas asks Hanna if he can take her home, she calls him Ian by mistake.
When Spencer and Emily have the flash backs about Alison gripping the ground, she has the jacket on over her hand but in the real video she didn't have the jacket over her hand.
When Simone is talking to Aria about making her turn off the O.C. as a kid, Lucy Hale (Aria) was in an episode of the O.C. as Kaitlin Cooper's roommate in boarding school