The Source of Mihawk's Attack!!? <– Read by Luffy's voice-actor :D
I was actually going to make such a post when I was reading a book on the nitty-gritty of Buddhism (rather unreadable and technical at that). Here's an excerpt and it's footnote:
**The Chinese T'ien-t'ai sect united the concept of the ten suchnesses with that of the ten realms of existence to establish its basic teaching that all phenomena are contained in a moment of thought (literally, "three thousand realms in one thought").
The ten realms of existence interpenetrate (10 x 10 = 100). Each of these is characterized by the ten suchnesses (100 x 10 = 1,000), and these thousand items are each seen in terms of sentient beings, the aggregates, and space (1,000 X 3 = 3,000). "Three thousand realms in one thought" indicates the interpenetration of all dharmas within the mind, an understanding achieved through the practice of concentration**
Obviously really heady stuff, but to summarize, this is basically a chapter on "The Seals of the Law", i.e., three or four points a teaching is judged against to determine whether it is a true teaching of the Buddha. Anyway, if I'm not mistaken, my memory of the fight between Zoro and Mihawk came back to me and his attack, "Three Thousand Realms" (again, if I'm not mistaken.. If I am, this is all spurious and I've completely embarrassed myself).. I had wondered whether Oda had studied Buddhism to any extent, though I don't know how commonplace that phrase or understanding is, and it's quite possibly a coincidence.
But neat, huh? :P
[spoil]Actually, I've read the manga ahead a bit, and now do remember some powerful character being referred to as a Buddha God (his name was something like that) shortly before the Luffy pirates embarked on their Skypiea adventure[/spoil]