This explains a lot. I do find his smile and general facial contortions pretty creepy. And, I hate to admit this, but I do kinda root for him to lose because he strikes me as someone who was doing pretty good in life before winning all that money. (He mentioned his four year old daughter has already traveled to 14 different countries.) Also, it seems a large part of his winning is his prowess with the buzzer. More often than not, I see the other contestants frantically pushing their buzzer because they know the answer but it's almost like they can't get through.
But I do have to give him props on his intelligence. He gets a lot of answers right that I couldn't even guess at. I also like his strategy of always starting with the highest priced questions.