My daughter loves both Diego and Dora but she definitely prefers Diego. Although Diego is a spin off of Dora, the show is good and my daughter learned so much about animals. She is 3.5y-o and she knows a lot more than the children of her age. We watch the show in French - teaching English words - and my daughter loves it. With Dora, my daughter is getting a little bit fed up. I think she has seen it all and therefore prefers diego. However, I think both shows are important and involve the kids. I recommend Dora and Diego to all parents and children who do not want their children to be couch potatoes.I think that a show involving children both physically and mentally is a must see TV.