For the record, Jack McKeon is younger than

• Bob Newhart, who's still touring and (occasionally) acting;
• Barbara Walters, who still occasionally co-hosts The View;
• Zbigniew Brzezinski, who still does all sorts of things;
• Hosni Mubarak, who until recently did whatever the hell he wanted;
• James Randi, who continues to do God's work;
• Adam West, still heard regularly on one of American's top animated comedy programs;
• Elie Wiesel, probably the most unlikely survival story on this list, continues to spread the word;
• Noam Chomsky, who continues to engage in spirited debates with anyone he can find;
• Vin Scully, still one of the very best in his business;
• Hugh Hefner, who still seems to be enjoying himself as few men have;
• Don Rickles, who -- like his good friend Bob Newhart -- continues to entertain audiences around the country;
• Joe Paterno, perhaps the best analogue for McKeon;
• Yogi Berra, who's still Yogi Berra;
• Elmore Leonard, who just keeps on writing incredibly readable novels;
• Jimmy Carter, who still flies all over the world trying to convince people to stop killing each other;
• Eli Wallach, who at 95 is still acting; and ...
  

of course no list of this sort would be complete without Betty White, who at 89 is still headlining her own popular television show.