When the customers enter the Buy More for Black Friday and Chuck is asked by a random woman about camera bags, there is a second woman to the right of the screen who begins waving her hands about as if talking to him. However, when the angle changes to show Sarah over Chuck's shoulder the woman is nowhere to be seen.
When Chuck is about to perform his pass of the CIA agents in the Buy More, Fernando can be seen in the background behind him. As he approaches, the camera switches to view the agents, behind whom Fernando can be seen, in the complete opposite location of where he was seen a moment ago.
When Bryce and Sarah turn around and point their guns at Tommy, who's holding Chuck hostage at the Buy More, Bryce's hair is all over his forehead. The scene cuts to Tommy and then back to Bryce, who is still holding his gun with both hands, yet now his hair is neatly tucked behind his right ear.
When Chuck sees Sarah kissing Bryce in his bedroom, the door is cracked open, but when Casey goes after Bryce the door is closed.
When Bryce takes Chuck to the lift pointing the needle to his neck, the needle touches Chuck's shirt and bends, proving that it is made of some plastic material.
When Sarah and Bryce enter the Buy More to support Casey and rescue Chuck, the filming studio's ceiling is visible through a transom window due to filming perspective (at 35:33).