When Ms. Dawson comes into the interview room with her lawyer, to be questioned by Goren and Eames, she is using a cane. But when she is leaving the building the cane is gone.
When Jack Crawley is led away in the finale, he is visibly just holding one of the handcuff shackles in his hand, it is not fastened around his wrist at all.
When Goren comes out of the interview room after talking to Mr. Nelson we hear the door close but he doesn't really close it, it's left open several inches.
When Karyn Milner enters interrogation room to be with her boyfriend, Jack Crawley, a camera can been seen in the one way window as Goren sits down beside Crawley.