Alot of the Meeting Planners we deal with have events that are outside of the States. Some of these events require a Speaker to be fluent in a certain language and request that you give your presentation twice, once in English then again in a second language. As a Speaker, I am back on track to learn French, as this seems to be the most requested second language from Meeting Planners abroad. The second being Spanish.
If you are interested in learning another language, not just be conversational but fluent, here are some great sites to check out:
Benny the Irish Polyglot
What languages are you learning this year?