It's there to prevent screen burn-in on plasma TVs. As such, it really only pertains to the TV version of Front Row or someone who uses a plasma as a display. I do not know of a way to stop it from happening.
I wish Front Row will ditch the static images, and return to the playing variant as seen in Tiger. A bunch of identical "HBO" logo's isn't very appealing, and doesn't say much about my "Curb Your Enthusiasm" episodes. 🙁