In 1994, Nickelodeon's parent company, Viacom, decided to commit more than $60 million to new programming, and Blue's Clues was born. The formula for the show, marketed toward preschoolers, was simple: A blue puppy places clues around her world for the kids watching. Through these clues, the kids can figure out what Blue wants to do. As it turned out, kids wanted to do whatever Blue wanted to, and computer games, live tours, books, DVDs, apparel, and food products prove that Blue is still one popular puppy.
Not all of these dogs were man's best friend, but they sure have entertained us. Up next: find out which psychotic dog was unleashed from the mind of Stephen King in his 1980's book turned movie.