I saw part of the special and Lou Grant was in it, though I don't know that he was top ten. The part that stunned me, though, was how old Ed Asner looks now. I didn't recognize him at first; it wasn't till he was saying "I" and "me" in reference to the character that I realized who he was. He's pretty old, but geez....
I felt that way about Howard Hesseman (sp.) who played Dr. Johnny Fever on WKRP.
Dick Van Dyke.