Visible crew/equipment: At the beginning of the scene where Bill leaves the house to look for Ben, the overhead mic is in shot when Jenny says "how people let that happen to them." (00:21:41)
Relax-Ay-Voo - S4-E7
Continuity mistake: Christine drags a Christmas tree in through the front door, the angle changes and the front door is shut. In all following shots the front door is open again.