This article gives some advice on the best settings on that flat screen we now all have. Some of this I understand, some I don't, but the information is interesting and helpful if you want to use something other than the default settings which come with your set.
The author claims the best setting is the cinema setting. And, new to me is a 'demo setting' also called torch setting by experts and means something similar to what you see on the showroom at Best Buy. But that setting is not what tv experts think of as a true rendering. He also claims that plasmas are the very best as opposed to LCD but that they're not being made as much these days because they don't stand out in showrooms.
I'm going to check and see if we have a demo setting. However, the way the average person can make their flat screen tv look its best is to have it hooked up to a digital HD box. All of us now must have a digital line, but we don't all have our tvs hooked to high def. And it's high def which makes all the difference.
We have only one of our tvs with high def converter because you need a box for each tv, at least with Charter. And that gets expensive. This is the main reason we'd consider The Dish or some other company, I'd love to have our other tv's look as good as our main one.