Robin Good: This video tutorial provides plenty of good tips, suggestions and examples of light accessories you can use to better control your studio lights when shooting.

"When preparing for an on-camera, professional interview, it is important to try to get the most out of the lighting you are using. In this episode, Rich demonstrates how to get the best skin-tone, hair light, and background light by using different light modifying techniques. Learn how to use lighting accessories such as gels, dimmers, flags, reflectors, and cookies to get a great-looking interview."

Good advice. 8/10

Original video and more info/links:

(Thanks to PlanetMitch for discovering this)