Beebo and I were watching Hawaii Five-O last night (as is our wont), and in the middle of one scene, I had to pause the DVD and say "Hey, it's that guy!". It was an episode titled "Highest Castle, Deepest Grave", ostensibly guest-starring Herbert Lom and Frances Nguyen, but the actor who caught my attention was Don G. Doolittle, playing a district attorney. I recognized him almost immediately as the scientist (the one with the beard in the photos) from one of our favorite movies, Creation of the Humanoids. You can watch it here, or read about it here.
I got curious about Don's career, since I'd seen him in two very different vehicles, so I looked him up in IMDB. It turns out, I've seen three of his four credited roles--the third was the movie Hawaii, which I watched on cable a couple of weeks ago. Sadly, I did not spot him there, and since the movie was three hours long, I'm not going to watch it again for his small cameo. He also appears (uncredited) in an Ernie Kovacs comedy called Wake Me When It's Over, from 1960.
It's easy to guess a little about him--he did a little acting and then moved to Hawaii, ending up in the small pool of available professional actors there. But what did he do for a living the rest of the time? Run a shop? Work in a hotel? Bum around on the beach?
Update: Gee, I think this might be him, too: "The narrator, Don Doolittle, was a 1940's radio announcer." Captain Bill is definitely played by D.D.! (I listened)
Update Two: What the hell??? He lives in western Washington State now. How weird! Hope you're doing well, Don!