Juan Carlos is! My respect for the Spanish king has always been high ever since I saw what he did when Col. Tejero Molina tried a military coup in the Madrid cortes back in 1981. Now that he laid the hammer down on Hugo Chavez in this clip, JCI has reaffirmed himself as "el hombre." Enjoy.
FYI: "¿Por qué no te callas?" is "Why don't you zip it?" in English...clásico.
Update: In this link, Juan Carlos has had enough of another South American dignitary and gets up and leaves. This provides a little context as well, as apparently Chavez called former Spanish president Aznar a "fascist." In other news, the pot in attendance called the kettle sitting to Chavez's right "black." Incredible.