Last year I took the 120 hour TEFL course at http://www.teflonline.com/eslteacherrecruiter/

I would definately recommend it though I have heard there are some other good ones out there.

I did my online course with Norwood English http://www.norwoodenglish.com and even before I finished the course they found me a job in South Korea. The course was cheap, the tutor really friendly and they have continued to help me even though I've completed the course. I also did their Gramamr for Teachers course and this has been a great help.