I was required to take four classes in a foreign language in college. It wasn't something I really wanted to do, but in retrospect I'm glad I did it.
I chose Spanish. I recall some of it, which is occasionally useful, but more important was learning a (albeit slightly) different language than English, in order to view natural language from a more abstract point of view. I also found great value in learning more about Spanish / Central-South American culture as part of the course sequence.
If you really get into it, you may be able to make technical presentations in different languages, which would likely be useful to your career in some way, if you let it.