Obama and Leno
I do like the annual tradition of the President having to make fund of himself (and others) at the White House Correspondents Association Dinner.
My favourite lines are about how is still popular in the country of his birth, and how glad he is to see Jay Leno, as his ratings have fallen even more than his.
The US presidency is the most powerful position in the world, and this semi-requirement to take the piss out of yourself is a healthy one. It is unthinkable that this would happen in Russia or China.