TOS: The Deadly Years, streamed on Netflix.
Ok, so I saw Bill Shatner about five weeks ago at an event, and I can honestly say that he is still in remarkable condition for an 87-year old man, certainly healthier and more energetic than I am at 52.
The 50- and 60-something Kirk in this episode was in much worse shape, forgetting orders, arthritic, hobbling around .. it was sad to see him lose both his command and his friendship with Spock.
As for Commodore Stocker, he meant well enough and his heart was in the right place, but how does someone rise to that rank with no real grasp of ship command whatsoever? I’m sure Sulu could have managed to get Enterprise to Starbase 10 in one piece, without violating the neutral zone and almost getting everyone killed.
Doctor, I made the necessary computations and produced this serum. It is crude and dangerous, but we have no time for refinements.