What programs for travel and work abroad are the best?

I’m getting restless and want to travel abroad (South America and/or Europe, most likely). Sadly, I don’t have the funds to just travel and stay there as long as I’d like to (one year or so). So, I was wondering if anyone had any suggestions of rad programs to become a part of where I can work abroad (to teach english, for example). I know about WWOOFing, but are there any others that are popular?