I despise television in general. Not only for my kids, but for myself. We have one, but keep ot programmed to only get Discovery, TLC, History, Animal PLanet, and like channels. We do occasionally watch it. I find there is very little of any value on TV or video these days.
I sling Malia if I really need to get something done, and once she is to big to be slung, she will be big enough the "help" me. Dishes make take 3 times as long with her helping. She may unfold more than she folds... but I really prefer to avoid TV.
My reasons aren't really AP though. Long before I ever heard of AP I wasn't fond of TV. Kids video's have an abundance of violence (Disney) and even sexual content. I can't believe how some of our dear Disney characters dress. No wonder 10 year olds are putting on close to nothing and striking suggestive poses.
Barney, and such claim to be educational, but I think they would learn far more by interacting with you and listening to you explain things like what shape the plate is. Why the glass can hold water. How soap makes bubbles. How folding a towel conserves space.
Granted, Malia will probably watch a nature show here and there... and I don't think it's in and of itself a "bad" thing. But more than likely I'll be watching the show with her. It will be an activity, not a babysitter.
That said, I used to be a nanny and understand WHY some want to use one. I personally just think there are better methods of entertainment that will prove far more useful.