Ivan the Terrible
Here's a TV freeze frame from the World Juniors Championship.
Okay, so here's the dialogue:

Interviewer: What's your first name?
Player: Ivan.
Interviewer: Nice to meet you, Ivan. What's your last name?
Player: Ivan.
Interviewer: No, I know your first name already? I was asking about your last name.
Player: It's Ivan.
Interviewer: Okay, Mr. Ivan. I must have misunderstood. Then, once again, what's your first name?
Player: Ivan.
Interviewer: Now, I'm totally confused. Okay, let's try this. What's your middle name?
Player: Ivan.
Interviewer: That's it. I quit.
Oh, and yes – he really is IVAN IVAN.