Since I can't afford to go out and buy several TVs to try them out is there a list somewhere that can confirm what large screen LCDs (40-50-60") do work with the Mac Pro?
Take your MacBook, a Mini-DVI to DVI adapter
<http://store.apple.com/us/product/M9321G/B?fnode=MTY1NDA5OQ&mco=MTI1Njk>
a DVI to HDMI cable
<http://store.apple.com/us/product/TR842LL/A?fnode=MTY1NDA3Ng&mco=MTUwODQxMw>
and a DVI-D (M) to DVD-D (M) cable to the TV store and try various sets. If they won't let you try them, go to another store.
Find a DVI or HDMI port on the TV that supports 1080p and connect it to the MacBook.
In the "Arrangement" tab of "Displays" system preference, turn off Mirroring. Set the resolution of the external display to 1920 x 1080 non-interlaced. Make sure there is no overscan (the pointer should not go off the edges of the screen). In the "Arrangement" tab of "Displays" system preference, drag the picture of the menu bar (aim carefully, so you get just the menu bar, not the whole display) to the picture of the external display. Make sure the entire menu bar and dock show on the TV.
If a TV works well on the MacBook's DVI port, it will work with a Mac Pro.