That's quite humorous, especially where the crew welcomes a passenger in one language and gets "Thanks, I think." in reply.
I always have enjoyed hearing all the languages spoken by the crew and it really serves to show how diverse they are. One one flight we had crew from Bulgaria, South Korea, Argentina (hi Carlos!) Thailand, Croatia, Sweden, Taiwan, Malta, Indonesia, Germany, Ethiopia, New Zealand and Tunisia.
On another flight the languages included Arabic, English, Tagalog, Bengali, Hindi, Urdu, French, Creole, Afrikaans and Amharic.
But I have also met crew from Russia, Serbia, Spain, Portugal, Sri Lanka, Nigeria, Kenya, Egypt and a few more. Oops, I forgot Australia.
It's like a mini United Nations and one of the features that I find appealing.