SpongeBob SquarePants
It's by far, Nickelodeon's most popular program. It has been made into many pieces of merchandise. The main character, SpongeBob is an adult sea sponge that acts like a child. He lives in a pineapple under the ocean. The series has three spin-offs: Kamp Koral: SpongeBob's Under Years, The Patrick Star Show and one with Squidward Tentacles.