Visible crew/equipment: When the group and Dick are standing on the front porch, a boom mic is seen reflected in the window of the door.
Continuity mistake: When Jack is leaving the shed with the bug bomb, the canister switches from being under one arm to the other.
Visible crew/equipment: In the lead-in to the movie, as it is showing the aerial shots from the helicopter, at one point you can actually see the shadow of the helicopter in the bottom right hand corner.
Visible crew/equipment: When the cook shows Danny his car, the camera moves down the length of the car. When it reaches the large tail you can see the crew reflected in the side panel. (00:40:30)
Continuity mistake: When Danny and the cook first meet the cook bends down slightly and shakes his hand. The camera angle changes and he's standing straight again and again bends down to get closer to Danny. (00:36:40)
Visible crew/equipment: When they're driving up the mountain in the VW and creating a traffic jam behind them, you can see part of the camera truck jump into the bottom right hand corner of the camera as it shows the long line of cars behind them. (00:28:10)
Plot hole: Interesting to note...in the opening scene where Pete is talking to Jack, Pete says that the boiler pressure needs to be dumped every night or it'll blow because the safety valve has been rusted shut for the last twenty years. Then he continues on to say that last year's caretaker, Grady, killed himself, and he was alone at the hotel. So...why didn't the boiler explode last winter? (00:02:20 - 00:05:55)
Continuity mistake: When the cook is saying "Sweet as honey from a bee" his hands are crossed at the waist, then the camera angle changes and his hands are at his side. (00:40:40)