Moses McCormick is a great language learner and polyglot who speaks almost every language that leaves you flabbergasted! He randomly walks to the strangers and speaks in their languages and the surprise and joy on the faces of the people he talks to are just fabulous. The people who watch the videos wish they knew more languages and started to learn languages.
Also, Moses himself provides language courses which are very effective to IMMEDIATELY talk to strangers. I have started learning Chinese and Korean through his courses.
Watch these AMAZING Videos
WOW!!!!! LOOK AT HIM!!!