Yes, I hate to admit this but in my opinion, they are watching way TOO much TV nowadays.
Nicholas wails almost every morning the moment he wakes that he wants to watch Cat, referring to the Tom & Jerry cartoon we have on VCD. I try not to give in usually, but it is a tough one. Between E and I, we have been rather inconsistent in this area.
Whenever the boys get super cranky, they almost always ask to watch TV, and the rectangular box really works as a soother too. So we do relent at times and often, too easily.