Character mistake: When the mayor invites the new sheriff into his house, he calls out for his daughter, Prudy. But calls out "Trudy" several times instead. Later in the film he corrects himself.
Character mistake: Many windows only have 1 or 2 panes taped over to prevent glass from shattering when it's hit. Unless every pane is taped over this will achieve next to nothing.
Character mistake: Dr Stoppidge's first name is Ernest, but when Dr Nookey sees him at the hospital party, he calls him "Charlie".
Character mistake: Tony and Stella are leaving the warehouse to get away from the villains. She calls him Tony - how did she know his name, as she only just met him a few minutes earlier, and he didn't tell her his name?