I have a hard time agreeing and disagreeing on this subject. I do not have a medical or psychological background. I work in television. My argument usually ends with "but I work in TV and I don't have a problem with it". We try to limit the amount of tv our 21 mo old watches. Usually centers around 1-1.5 hours per day and is Sesame Street and these nursery rhymes that are on demand on cable. He usually enjoys watching them, but usually loses interest within the first 30 mintues of Sesame. I work from home some days and it's pretty easy to turn the tv on as a babysitter. That's where I think most people have the problem. It's not necessarily the TV, it how we use it with the kids. I have no problem sitting on the couch and watching a baseball or football game with my little guy. I do have a problem with turning it on and walking away with him standing there staring at it. Just my 2 cents.