What's the Kennection? #119

What's the first name of Sylvester Stallone's movie character Rambo?

In Munro Leaf's best-selling children's book, what's the name of the bull who would rather smell flowers than fight matadors?

What toy company sold 45 million yo-yos in 1962, more than the number of children in America?

Which Roman emperor was probably murdered by his wife Agrippina, and succeeded by their adopted son Nero?

In the Beatles song "Paperback Writer," the paperback is based on a novel by a man with what name?

What's the "Kennection"?