huisache...wasn't Hagman the son of Mary Martin (of Peter Pan fame)? Don't think J.R. and Danno are related.
Hawii 5-0 was a great show with complex and interesting plots, great guests and I guy I knew from Swiss Family Robinison, a delightful Disney movie that played to my youthful love of on-screen violence. I think MaArthur was the adopted son of Helen Hays. Larry Hagman's mom was Mary Martin.
Hawaii 5-0 has the best TV theme and show open ever. Nothing even comes close. When my wife and I first started dating, we would catch reruns on KNVA late night. I was amazed at how well the show still stood up. It was terrific.