DO they all look the same?

One of my secret hobbies is to identify people's ethnic backgrounds by how they look, talk, etc.

I don't think most of us are as good at this as we think. There is a young woman who works at a shopping mall in downtown Seattle I was sure was Russian based on her appearance and accent. But when I asked, she was Greek.

Here's an online test to test your ability to identify if an asian person is Chinese, Japanese or Korean. I didn't do well here either.