Really wonderful video. I was just reading a book by Feynman a couple of weeks ago. He was so talented at so many things ( he was also, if I remember correctly, a wonderful composer), that his colleagues would try to trip him up on various things. I will try to relate this anecdote he tells in it as I remember it, but it is probably slightly off. So, they asked one of their colleagues (who was Chinese) to greet Feynman. She says something, and then he responds. She throws up her hands and says "Of course this would happen! I say something to him in Mandarin and he responds in Cantonese".