Despite his name, he's actually afraid of almost everything. Courage the Cowardly Dog is about a purple dog named Courage who was found by a kind woman named Muriel after being abandoned as a puppy. Living with her and her grumpy husband, Eustace, Courage has to face his fears and save his new family. It was Cartoon Network's highest-rated premiere at the time. One of the most popular shows to come out of the network, it definitely deserves a spot on the list.