After I purchased an LCD flat screen television last fall I tried various commercial cleaning products to clean my tv with little success. One day I read the following recipe/tip in a magazine and tried it. This really works to clean LCD screens including LCD computer monitors.
Mix 70% Isopropyl Alcohol and water in a 50/50 proportion (1/2 cup alcohol and 1/2 cup water) and put in a spray bottle. Spray LCD screen lightly and use a soft cloth to wipe clean (I find that cloth diapers work best).