When Melinda's hair is caught in the garbage disposal, Melinda is frantically trying to reach the switch to turn it off, and the switch is in the down position. The shot switches to Melinda struggling to free her hair, then switches back to her trying to reach the switch which is now in the up position without anyone touching it.
After an art exhibit Jim states that the last person executed by hanging in the United States was Billy Bailey on September 25, 1996. While he stated the correct person he got the month wrong. Billy Bailey was in fact executed on January 25, 1996.