I have always heard it is better to let the lamps in a LCD/DLP display warm up fully for about twenty minutes before you turn the tv off. This is supposed to help prolong lamp life and most of the time this is not an issue but there have been times when I have wanted to turn my LCD R.P. on just to check to see if the DVR was set up to record. I did this last night to record "The Unit" and afterwards left the tv on for about an hour (I forgot it) while we watched "American Idol" upstairs. What are some opinions? Did I shorten my lamp life more by running it for an hour or did I keep it from an early death by not powering on/off so much?