I couldn't find much on the topic, but I'm always impressed when a player goes to another country and gives an interview in a foreign language.
Here are three clips of US Internationals Steve Cherundolo, Landon Donovan, and Michael Bradley giving interviews in German, Spanish, and Dutch. This was a tough one, if anybody has ideas for more of these, let me know and I'll add them in. EDIT: Carlos Bocanegra speaking French link added
Carlos Bocanegra speaking French (link)