English and Spanish. I've been teaching myself a little Japanese, but it's difficult to learn so I don't know nearly enough yet to vote for it on the poll.
Obviously English, and I learnt how to read, write, listen and speak Spanish in high-school.
I can also talk and understand some amount of Croatian, because of my background.
i can speak English and i do understand Spanish. but i can't hold a conversation in Spanish. i'd still know what you're talking about and i can understand what i'm reading in Spanish.
I'm actually surprised that there aren't more Arabic and Chinese speakers on here. Those are two that are the most spoken worldwide aside from Spanish and English.