It's been very exciting to have ESL students in our Linguistics Class.  I am fortunate since I speak English and Spanish and we've had a large group of students whose primary language is Spanish.  I would speak to them in English but for those who did not understand everything I was able to translate to them in Spanish.  They all agreed that practicing was essential to learning English.  They listen to music and watch TV in English as a way of practice.  Overall it's been fun to be able to help them practice their English.