The only other voice I can think of with a similar gravelly charm to David Warner's was that of Alan Rickman (Severus Snape), who sadly is also no longer with us. I think Frank Welker is still around ("Ho, there wanderer ...") but I don't know if he does voice acting anymore. Voice control is similar to singing; it takes practice and very few people are naturally good at it. I am thankful to have heard so many great ones!
