I happened on this documentary completely randomly on Youtube. Unfortunately the active centenarian object of it is possibly the most infamous one, Leni Riefenstahl (Hitler's favorite propaganda film director). I don't mean to start any political debates, I was simply struck how sharp and active she was at 100, in the year 2002. She was still diving and released a film about underwater nature on her 100th birthday. The documentary piece shows her new Avid editing suite - she edited all her movies herself and had recently learned computer-based digital editing. And the previous generation of digital editing a few years earlier at age 95. Kinda made me think of some people I know who basically refuse to learn anything new at about 35, unless their livelihood absolutely depends on it.
Riefenstahl died in 2003 at 101.
"Leni Riefenstahl - The Immoderation in Me" 60 min (There's and error in the Youtube title.)
https://www.youtube.com/watch?v=xjgYS8uXwFk