This is more of a question than an answer, but I always wonder how big Clive Reville has ever been in THIS country, as opposed to Britain. I know he's familiar to people in the character actor sense, but I'm not sure about any other.
Other than Columbo, the only other thing I know I've seen Clive Revill in is The Legend of Hell House. Apparently, I've seen him in The Empire Strikes Back, Robin Hood: Men in Tights, Transformers the Movie and Zorro, The Gay Blade and never realised he was in those films.