Scooby Doo and Shaggy
Well, I decided to post something different for this one. For as long as I've been on earth, Scooby Doo has always been around. Other cartoons usually came first in my book, but I've known people who just can't get enough Scooby Doo. He's had a ton of different iterations of his cartoon, and a bunch of full length movies too - "Scooby Doo Meets Batman" stands out in my memory as especially neat.
Scooby just doesn't go away. What is it about Scooby Doo and his friends that they have such staying power?