[brattgomez]

There is both a minimum and a maximum distance for the best view of the screen. When possible, you should attempt to find a screen size that has your viewing distance someplace in the middle.
Size
The following sizes recommended by tigerdirect.com are listed with the minimum to the maximum distance in feet:

26-inch screen size -- 3 feet to 6 feet
32-inch screen size -- 3 feet to 7 feet
37-inch screen size -- 4 feet to 8 feet
42-inch screen size -- 5 feet to 10 feet
47-inch screen size -- 6 feet to 12 feet
60-inch screen size -- 7 feet to 15 feet

You also want to take into consideration the television stand itself. If you are buying a new television stand, it's not likely to be an issue. If you are using an old stand then you will want to be certain that your new television will fit.