This is just my wacky opinion, but let's face it... we all grew up in the TV generation and we don't all have ADD or sub-par IQ's (or whatever is supposed to happen to kids who watch TV). I'm not saying to park your kid in front of the TV 6 hours a day or anything, but a little TV never hurt anyone. In my humble opinion, I don't really think there's any such thing as educational TV for little kids - it's all just entertainment. But what's wrong with a little entertainment? (Again, not advocating shoot-em-up TV, but why not a little Backyardigans or Dora?) My kids watch DVD's mostly, because at least that way they aren't bombarded with commercials. (Which is really more for my benefit than theirs, I guess =)
When I try to cut off TV completely, bad things start to happen in my house. I went through this phase recently where I decided my kids would not watch TV. It turned out to be a stupid idea. For instance, my 2 year old climbed the bathroom counters, bypassed the baby-locks, and got out the hair conditioner, which she then dumped into all my dress shoes. Or she put her crayons into a load of laundry and turned the dryer on, ruining an entire load of clothes. (Yes, both of these things have happened in my house in the past month...) If I'm not able to keep an eagle eye on them (maybe I need to pay bills or make dinner or leave them alone with my husband, who can't keep track of them to save his life), I will put the TV on, absolutely. It's all about saving my house and my sanity!!