We have a tv that was not watched for the first 21 months of my dd's life. We don't have cable. We started to watch tv as a family when dd was 21 months. She was ready to watch movies in one sitting as we found out soon. Since then, we have watched many movies together the first time. Dd likes to watch the same movie many times. So we let her watch on her own with us sitting for a portion here or there. Dd is 3.3 yo now and watches pbskids on Netflix by herself. Overall, we watch 3-5 hours of tv per week.