I started out using bias lighting when watching movies on my plasma years ago. A bias light with a neutral color temperature around 6500k (for NTSC TVs) really enhances the viewing experience when watching large TVs in an otherwise dark room. I was so pleased with the effect on my plasma that I put lamps behind my monitors as well. Since I just do development on my PC, I wasn't so worried about spending extra on special lamps with the proper color temperature for my pc. If you're a designer, color temp for a bias light is an important consideration since bias light color temp can skew your natural judgement of colors. If you're looking for a professional grade solution to the problem or looking for more info, checkout http://www.cinemaquestinc.com/ideal_lume.htm. I bought a plasma bias light from them many years ago and have been very happy with it.