There is virtually no limit to the new ways Directors of Photography find to use effective polarizers. A few examples of what they can do include:

• Darkening skies in color photography for dramatic impact. While graduated neutral density filters can also be used to achieve this effect, the need to position their transition line accurately precludes their use in many applications. Polarizers do not suffer from this limitation.
• Suppressing reflections and capturing truer color when filming actors through a windshield, and from other rigged-car camera positions.
• Greatly adding to the drama and appeal of the shot when photographing food (particularly meat or liquids).
• Increasing the color saturation of any object with a glossy surface.

In summary, virtually any subject involving glare or reflections, or that is illuminated with specular light, can be improved through the skillful use of a quality polarizing filter.