I speak English most of the time, but also grew up around Spanish and learned it through constant exposure (and a couple courses). In high school I took three years of Japanese, know a good deal of it and also took a year of French as an elective for summer classes. A friend of mine also taught me a decent amount of German during my last year of high school.
I need to practice up on French and German, though. Since leaving high school, I've hardly ever used them, and my memory is starting to slip...