I was watching a Twilight Zone and some people looked familiar, but I couldn't think who they were, so I looked it up. It turned out Roger Davis was in it (he WASN'T one of the ones who looked familiar!). Knowing it, I could sort of see the resemblance, but I still didn't really recognize him. I really would never have realized it on my own. But, I definitely recognized the voice once I was aware of it.