Reading through this thread made me think of that scene in "The Deadly Years", where Spock goes to Kirk's quarters to inform him of the decision of the competency hearing. In a fit of anger, the elderly Kirk musters enough energy to lash out at the ageing Spock. Kirk to Spock: "You traitorous, disloyal, you stab me in the back the first chance you get? Spock. Get out. I never want to have to look at you again." It was a sad moment between those two characters. The imagery of that scene is what came to mind when I was reading through this thread. I guess in the real world, the roles were reverse between Nimoy and Shatner. I don't know, maybe Nimoy did have a real gripe against Shatner. Or, as another poster mentioned, a declining cognitive capability may have affected Nimoy's perception of reality. Or it may have been a combination of both, the decline may have just accelerated a gripe Nimoy had against Shatner. Whatever the case, it is sad.