I've had a 51" HD RPTV for 3 years now. I had the TV for two years when I was in college and the only time the xbox was not running on it was on Sunday (apparently a holy day for my two roomates from Indiana to watch Nascar and Green Bay). My tv has been through probably what some would call extreme abuse for the testing of burn in. To this day there is not one instance of even remote burn in on my tv. I was probably overly worried at first, but as long as common sense rules in your world, you will NEVER have a problem. You can play ANY game for as long as you want and I can't say you will screw up your tv. You've got to remember, even on games with huds that never move, there are lots of time while playing when the hud does not exist, cutscene, loading, etc. The only time you should even be worried is if you pause a game, disappear from the earth for a whole day, and then come back only to realize your game is still paused. Seriously though, just don't pause a game for 3 hours.