Asia Japan
You have found the way to Japan on Asia:
Bayside English - Jobs for native English-speaking teachers already resident in Tokyo, Yokohama or Yokosuka. Full time jobs require a high speed computer connection for teaching over the Internet.
English Telephone Club - Seeking native speaking English teachers currently living in Tokyo or Yokohama to give conversational English lessons in their homes.
Japan Links - List of sites with information on teaching ESL and job hunting.
O-Hayo Sensei: Newsletter of (Teaching) Jobs in Japan - Free semi-monthly electronic newsletter that researches and lists currently available teaching (and other English language-related) positions in Japan.
WinBe English School - Information on the school, including photos, a school list and an online application form. Visa and accommodation provided. Help build the largest human-edited directory on the web.