While they aren't actors (well, one did do some writing and some voice work), but he will resonate strongly with me is Roger Ebert (Film Critic) and Jeff Lynne (Of The Electric Light Orchestra).
I mean, it sucked when we lost Mike (Edwards) and Kelly (Groucutt), both members of my favorite band ever, but when Jeff goes, every song will carry a hint of sadness with, but I know it's life, and it will go on.