Dr. Who is great for many reasons; first and foremost being the history in the series. It combines science fiction with romance and sentiment as well as teaches that problems should be solved without violence and killing. Dr. Who also has become a worldwide icon, not that this should persuade anyone to watch, but as a testament to the amount of fans this series has gained.
No, Dr. Who is not the best show ever, because it not widely known. A show cannot have the status of the best show ever if not everyone knows about the show. But everyone knows the Price is Right. That show is the best show ever beacuse it had Plinko. If Dr. Who had Plinko, it would be the best show ever. It should get Plinko.