Norman Bridwell's Clifford the Big Red Dog series of books dates back to 1963, so most parents with young children probably remember reading the stories themselves. The reason the intrigue spans generations is quite simple: Everybody who loves dogs wishes they had one like Clifford. He's gigantic, playful, and loving, and he's an unfailing friend to owner Emily Elizabeth.

The lessons of each show play out in an uncomplicated, formulaic manner that's easy for young minds to grasp. Sometimes, the lessons are learned by Clifford and his canine pals T-Bone and Cleo. Other times, Emily Elizabeth and her human friends do the growing. Themes have included how to be a good houseguest, why it's important to avoid prejudging others, and taking responsibility for one's actions. As with spin-off series Clifford's Puppy Days, this program's content is based on ten "Big Ideas" that provide the backbone of the show's moral messages. Some of the Big Ideas include helping others, showing respect, playing fair, and sharing -- universal values that kids should be exposed to in the preschool years.