How Much TV is TOO Much TV?

There are very few parents I have met who have not used TV at one time or another to relieve themselves of parental duties.  Sometimes placing our children in front of the TV gives us a chance to take a much-needed breather.  At other times, we have no choice but to find some way for our children to self-entertain so that we can get basic tasks completed (such as making dinner or folding the laundry).  In these cases, it is natural for many parents to turn to the TV as a