These days, it's almost impossible to say that TV is a positive influence in children's lives, but one person who did make a difference was Mr. Rogers. People made fun of him and his show, but I remember watching as a little girl, and no matter what was happening in my life, he always made me feel safe and good about myself. Here's a video of Fred Rogers receiving a lifetime achievement Emmy award. His acceptance speech is wonderful.
Video from KarmaTube