As to James Shigeta, he's a fine actor, but this thread's about Planet of the Titans and not Phase II/TMP casting minutia: I'd like to keep the focus on Titans, thanks.
My bad. I only brought it up because of the mention of Mifune as a Klingon (which, BTW, would've been awesome if that had come to pass).
Thanks again, I am really enjoying this thread. I always liked the idea behind PotT; it's a shame it never got greenlighted.