Dave-san

I met Dave-san
http://en.wikipedia.org/wiki/Dave_Spector

Yesterday I drop in a electronic shop in the Tokyo station.
There I find a familiar face to me.
He is Dave-san, an American comedian in Japan. I said "Wow" and he smiled at me.
When I met a people from TV, I always feel confused. They really look like in the same way as I see them on TV although　they normally can not see me when I see them on TV. However when we met, he was able to see me. That is so strange feeling.
At first since I was confused I talked to him in English although I know that he has extremely good command of Japanese. As far as I’ve heard from TV that he is extremely cleaver and have good command in both in Japanese and English.
His face looked as if he does not understand what I said.
So I said “Oh, you remember now that you understand much more in Japanese than English”. And say Hi! to him Japanese. He also asked me what I am looking for.
I did not talk to him more since I thought I should not since he was enjoying his private time.
However he kindly say good bye to me when he left the shop.