I was a huge fan of SHO kosugi when I was a boy. I'm 42 and can remember very well when his movies were kicking ass. I loved Revenge of the Ninja and Enter the Ninja. He was awesome as a good guy or bad guy.
Saw his Building with his name in huge black letters on the side "SHO KOSUGI" in California around 1978-80. Called about classes and he answered and said he didn't teach anymore and was doing movies. So started training in Koga ryu not "Togakure/Bujinkan" Koga & Iga Ninja was being taught secretly in USA wayyyyy before Bujinkan.