Visible crew/equipment: When the car chase happens on the bridge, at the point just before the car comes to a stop upside down, the roll/safety cage can be briefly seen. It can also be seen as the car explodes just after Mark Ruffalo put his hands on his own car.
Visible crew/equipment: After Jack has finished his spoon-bending trick, a passenger on the ferry finds the spoon and stem he was using. There is a close-up shot of the spoon being removed from Jack's trouser pocket, where a reflector screen can be seen reflected on the spoon. (00:04:55)
Answer: The mirror was inserted at an angle, so that the reflection was the ceiling and not what was in front of them. It's the same principle for how periscopes work.
Bishop73