At the end, there are three cuts to Abed when he's speaking with the dean. In two of the cuts, a large Styrofoam container of chicken is in front of Abed, but in the final cut, it's gone.
When Jeff is trying to convince the other to stop working for Abed, notices on the wall behind him are present in some cuts but not in others.
15:54 Focus Puller seen in bezel of TV as Pierce discovers his wires have been cut.
When Abed is feeding the chicken to Shirley's boyfriend, as she walks in, the camera pans back. When it switches to Shirley's point of view, the cameraman is clearly visible behind Abed.
When Britta is confessing her overreaction about her cat's illness, she first refers to it as "he" and then immediately after switches to "her."