I was fortunate enough to participate in a Toyota International Teacher Program in in 2002. That year the program was in Japan, it was two amazing weeks - I'd go so far as to say it was #1:
If you have the energy or even if you don't make sure you apply for this incredible program.
From the Institute for International Education (1.1.E) / Toyota:
We’re pleased to announce that the application for the 2010 Toyota International Teacher Program to Costa Rica is now available online. The program will take place June 18 - July 3, 2010 and applications are due January 6, 2010. You can visit www.toyota4education.com for application instructions, FAQs, and to apply online.