Perhaps of some relevent interest, the Japanese mecha Gaiking is now getting his own live-action film. You can thank Transformers for this...
http://robojapan.blogspot.com/2010/0...hs-shogun.html
*EDIT* Curious to note: Taekwon V, Korea's answer to Japan's Mazinger Z, is also getting a live-action treatment. Hmmm.. Coincidence?
http://roberthood.net/blog/index.php...bot-taekwon-v/