I think the last one would have to be The Godfather because it was such a powerful story. There was lots of violence in it but I could take it because I thought there was a reality to it. It wasn't gratuitous, it was just these guys' story.
The answer to old age is to keep one's mind busy and to go on with one's life as if it were interminable. I always admired Chekhov for building a new house when he was dying of tuberculosis.