Look at this guy. He seems frightened; but of what exactly? The gesture appears almost mechanical.
Also there is a flasher-like quality to his expression.
But in reality he is a just a goof.

There are several types of goofs:

• Somebody or something from the filmcrew is in the picture (e.g., camera and cameraman is reflected in a mirror, or the microphone is visible).
• Chronological or conditional errors (e.g. a cigarette getting longer with the next scene, or a bruise wandering from the left to right leg).
• Historical inaccuracies and anachronisms (e.g., an HDTV set in a film set in the 1970s).

Goofs can be found in a large number of films, even in very expensive productions.