Cheng Hsin
   A blend of martial arts and Zen founded by Peter Ralston. The site provides a biography of the teacher, a description and articles about the practice, lists recommended books and videos and provides a schedule of workshops.
   http://www.chenghsin.com/

What is Bushido?
   The moral code principals that developed among the samurai (military) class of Japan, on a basis of national tradition influenced by Zen and Confucianism.
   http://www.shotokai.cl/filosofia/06_ee_.html

Zen Martial Arts
   Dedicated to changing the popular perception of martial arts, from that of exercise and self-defense, to a path of personal and spiritual growth.
   http://www.zenmartialarts.com

Zen in the Martial Arts
   "You must concentrate upon and consecrate yourself wholly to each day, as though a fire were raging in your hair." These words of instruction to a medieval samurai might be said to contain the essence of Zen. To practice Zen or the martial art
   http://www.shotokai.cl/otras_artes/introzen.html