I'm going to learn a foreign language.
I'd like to hear the opinions of multi-lingual programmers and developers who have made use of a 2nd language on what they perceive to be the language they've found most useful other than their own. And, quite ignorantly, I'd like to assume 'their own' is English.
I have no specific plans to travel in the future (but will at some point) but would just like to diversify my non-technical skills base so have no preference at the moment on what language it will be I put time into studying.
With regards to my career, I will continue to pursue a career in SharePoint development or .net web application development (all C#).