I took the January 2013 course in Prague, and it was fantastic. It was very intense, but also tons of fun!
I got a lot of practice time with actual students, which was great because I’d never taught before. I also felt like the teachers were EXTREMELY knowledgable not just about practical teaching but about educational theories, etc. OxfordTEFL has a communicative focus, which is exactly what the schools I’ve interviewed with here in Prague are looking for. They also have great job support, especially as you look for work after the course. Sinead’s help has been invaluable. I didn't send out a single resume myself after the course was done. Instead, Sinead sent my resume to tons of places, and I now work for three different English schools.
The location is also fantastic. As are their supporting materials- OHP, computers and dictaphones, ample printer/copier access, digital projectors, etc.
They also offer intensive post-course classes in Business English, Teaching Young Learners, and Technology in the Classroom. These courses also look great on a resume and are very helpful!
If you're looking to get your visa or Zivnostensky list, they also work with a woman named Sarah who is incredibly helpful, and far less expensive than any of the other visa places around here. I got my Zivno and Visa within a month after graduating thanks to Sarah.
Overall, I’d definitely recommend OxfordTEFL in Prague for anyone who wants to teach English as a foreign language.