During the montage, Bill is shown lying on the bed and looking at the ceiling fan. The final shot is an upper body shot of him with fan blades turning; but the shadow includes a metal screen around the blades from a free-stand or desk fan rather than a ceiling fan shadow.
In the final scene when the scene pulls away from the door of Ralphs office,the single sign on the door has Ralphs name in large letter and in smaller letters at the bottom of the same sign. Earlier when Ralph and Pam are entering the office there are two different slide on signs with larger letters , one the upper saying Ralph Hanley ,and the lower one saying Assitant Principle.
In the opening scene, Ralph parks his car next to Bill's out in the desert. After Ralph accidentally sets Bill's car on fire (as he's practicing pyrokinesis) they run off to take shelter. In the long shot of Bill's car exploding, Ralph's car has disappeared.
When Bill is in Palmer's office after arresting the two thugs who kidnapped Pam, Palmer writes a note to himself to circulate a memo discussing the misuse of federal jurisdiction. After writing the note he puts the pen back in the pen holder. Palmer then stands up and walks out of the office. The camera angle changes to show the top of the desk and the pen is laying on it next to the note. It should have been back in the pen holder.