I'm still amazed that people find the thought of a blank screen when the machine is off such a big deal. What do your computer monitors and televisions look like when they're off? Do they bug you hugely in that state?
If so:
1) Just keep the darned thing on all the time. No one will think less of you.
2) Print out a picture of the backglass and stick it over the monitor when you turn it off.
3) Fold the backbox down every time you turn the game off and pretend you plan on moving it somewhere.
4) Maybe someone will sell a conversion kit. It will include a tiny LCD screen like you'd get in a portable DVD Player, and huge backglass artwork. Pull out the 26" LCD and replace with the tiny one.