Heartawake.com: Writings by Dr. Alan F. Zundel — I’ll have to go back and read more of his work, but I did find his The Development of Christian Zen (PDF file) to be an interesting read, mostly in that it seeks to trace some of the influences/teaching lineage of teachers who practice both Zen and Christianity. (this idea of tracing a lineage of teachers in Buddhism used to turn me off, but now I see it more positively as being about gratitude for those who’ve gone before you and who have helped bring you to where you are today)