During the rooftop gunfight, Broadhurst fired at least seven shot from his police revolver which only holds six bullets.
Around 30 minutes in, when McCloud is leaving Clifford's office after inquiring about his health, the camera moves up and the top edge corner of the wall is briefly visible, revealing the lack of a ceiling.
At approximately 12:44 is knocked to the ground by where he hits his head at the base of the stone wall. Takes the contents of his wallet to make it look like a robbery gone wrong. At 12:55 drags the body to the edge of the stone wall so he can dump him in the small ravine, as lefts, his body should be dead weight, but the actor helps lift his body by bending his knees and pushing with his feet to get him to fall behind the stone wall.
Driving through what's supposed to be Manhattan, McCloud and Broadhurst drive past a "Pacific Security" bank, showing the scene is actually Los Angeles.
At about the one-hour mark, Broadhurst tells McCloud to stay far away from him while boarding an elevator. The doors for the landing are only one inch or so thick, and there are no doors at all in the elevator cage. Anyone who's ever ridden an elevator knows there are two doors at each landing; the cage doors and the landing doors.
Boom microphone visible when the movie director is first descending from the camera rig. Could possibly be on purpose as it is a an active movie set, but then the boom would be positioned over the actors instead of the director.