The title is based upon the 1957 song "Wake Up Little Susie" written by Felice and Boudleaux Bryant and was a big hit for the Everly Brothers reaching #1 on the Billboard charts.
When Cory and Topange are watching through the tapes while editing their project, the camera points to a tv showing the contents on one of the tape. At that moment, at the most outer borders of the screen, you see a person walking past the television.