That's right, in the movies. Think back to the best movies you have seen and next time you check them out at the video store pay careful attention to the lighting. It is used for everything from establishing mood to portraying good and evil. Light sculpts more than the scene you watch, it sculpts, molds and manipulates your feelings. Light on film in the hands of a good cinematographer is every bit as powerful as as the finest poetry of Robert Frost, Edgar Allen Poe or the writings of Shakespeare.
Light is used to communicate in the movies.
To take it a bit farther, think of how many images you have taken where you had to bracket a lot to be sure of getting something on film. No, it isn't done that way. It is done with a production crew, accessory lighting in the form of HMI's, reflectors and by cinematographers who understand how to use light. They learn what the meter readings mean in relation to the film, lenses and moods they want to establish. Where we are often on location for a few hours trying to capture a scene they may be on location for days and have to know how to use the lights to keep the scene looking the same while photographing different actors and views, all of which have to be lit believably.