Walter Cronkite, 91, is a legend. And, sadly, his journalistic swan song will be to contribute weekly editorials to the start-up channel Retirement Living TV. His first commentary will air on Nov. 20 during the channel’s signature show, Daily Cafe, billed as a two-hour talk-and-variety program in the afternoon. Can’t wait to see him read the news, while Debbie Reynolds dances. Yes, old people make us sad.