[Solved] Best Large TV For Gaming?

Yes, most plasma TVs have a "games" screen setting which reduces the brightness plus if the image is static for too long, it will kick in the screen saver or else move the image around to avoid burn-in. The severity of the problem has been greatly reduced with modern plasma TV's but it still exists.

Since your main purpose is gaming, I'd get a fairly cheap LCD TV like a Vizio, since you can generally get a larger screen size for the same amount of money. It'll be lighter and easier to mount on the wall than a plasma, it'll probably be brighter in case you have a window in the room, and it uses less electricity and generates less heat (good during summer, not so good during winter ). It's only when you are into cinema that you need really high contrast ratios like on plasmas or top-tier LCDs for those thousands of shades of black.

However I would also recommend 120Hz refresh or higher since otherwise you might notice motion blur in some FPS games. This option is much more common nowadays than when Sony (IIRC) introduced it some years ago for their LCD TV's, in order to compete with plasma.