I read that TV is bad for the baby because they need the human interactions. Well, I've been with my child 24/7 for almost two years now and I found that educational TV is actually very good for my kid and for my sanity. We do book reading throughout the day and my child receives lots of human interactions. When we do watch TV, we have an overhead projector so it's better for her eyes, or we use flatscreen or a dvd player. She is learning her alphabets from watching The Letter Factory by the Leap Frogs and she learned how to sign what she needs by watching the Baby Signing Time borrowed from the library.
Before, my child did not like to sit in the car seat and it was a torture to get her buckled into the seat. Now she loves to sit there. Without her shows by her high chair, my child played with food, made a mess and did not eat much, but now her mess is not as bad and she eats lots of food that her poop is gigantic. She's learning words and songs. Sometimes if I need to cook dinner, the show may keep her entertained for a little bit, then she wants to come play with me which is dangerous by the stove. Overall, I think educational TV (sensor the messages on the shows) has lots of benefits if the TV screen is not damaging to their eyes.