10. Dick Clark
5
I probably have no business rating anything to do with television since I've watched probably less than a hundred hours of it in my entire lifetime, so I'll bow to the experts and give Dick Clark five stars.
However, I must say he's never been "the world's oldest teenager". That honor belonged to Rufus Thomas until his death at age 84 in 2001 - and since then, I claim the title for myself.