Wow, I stand corrected... from all of the information I had seen previously about Star Trek conventions, I hadn't noticed Lenard on the roster. Clearly, I must have overlooked it.
Anyway, I'm so very sorry to hear that he died of multiple myeloma. What a horrible suffering he went through... and a chilling forecast, from his last appearance on TNG.
I had no idea he was a regular on the Planet of the Apes series. But now that I think about it, I have vague memories of voices where one of them sounded like him. Certainly I remember him doing the SAAB commercial voiceovers. "SAAB, the most intelligent car ever built."
He has been and always be the quintessential representation of a Vulcan...