Continuity mistake: Gordon mentions that his wife accidentally spilled hot water on his leg and burnt it, but the actor only occasionally limps on it, although we are shown that he has an injured leg. This is mentioned on the commentary.
Continuity mistake: When Gordon is remembering the day he went home and his wife spilled the hot water on him, it shows Gordon in the van watching his wife and daughter walk into the house. They disappear around the corner, but in the next shot of the house his wife and daughter are walking into the house again.
Continuity mistake: When Hank is first discovering the cache of hidden metal items, watch carefully as he removes the brick and the items spill out. The position and number of bricks removed change between shots. This footage is spliced together from several takes, as mentioned on the commentary.
