I saw George Kennedy in an infomercial a few months back...not looking well at all...:(
George Kennedy was in a Christmas episode of “The Young & The Restless” (as Victor Newman’s deceased father) either in 2010 or 2011, but what was notable was that aside from a snowy tv image, they didn’t actually show him, he only did voice-work for it (which was rather telling).
I didn’t feel him terribly effective as a villain on “Dallas”, anyhow, in the waning last seasons. I thought William Smithers, the actor who played the cold and asexual Jeremy Wendell, the Westar executive, was much better, creepier and menacing and he didn’t need the histrionics that so many folks playing villains seem to want to do.
George Kennedy is close to 90, so I guess he can be excused if he isn’t well enough to do a tv series.
Of course, Larry Hagman isn’t too far behind. He probably has too much fun playing an evil SOB