Have you guys ever surprised foreigners by speaking their language? It's funny as hell.
At work we recently had the visit of a client from Japan, and we I met him I introduced myself in Japanese. His face was priceless!
He had no idea of what was going on. "Why is this random Latino speaking my language? " he must've thought.
Granted, I don't really speak Japanese, I only know some basic phrases.
When I asked where in Japan he came from (日本 にどこからですか) his eyeballs popped out and nervously replied "Tokyo".
At the end of the day I said 今日もありがとうございました (thank you for today) and he started laughing as he bowed.
Learning basic phrases in another language is not hard, and makes people feel really appreciated. Definitely an ice breaker.