I tend to have it on in the background a lot of the time, but they dont sit glued to it all the time, they watch a bit then go off and do something.
Funnily I dont tend to put it on when DD1 (4) is at playschool, and it is just dd2 (16 mths), tho she does ask for it now. She brings me the remoteI also think it depends what progs you have on, alot of them are educational.
I try NOT to have it on so much, does he goto playschool?? Do you at least get out of the house once a day and walk, or go to the park etc??
I often whack a dvd on too, if I need to do something.
Also he is old enough to do stuff, DD1 will sit and paint or use playdough, or draw