Irrepressible writer-comedian Carl Reiner, who shows no signs of slowing down at 94, tracks down celebrated nonagenarians, and a few others over 100, to show how the twilight years can truly be the happiest and most rewarding. Among those who share their insights into what it takes to be vital and productive in older age are Mel Brooks, Dick Van Dyke, Kirk Douglas, Norman Lear, Betty White and Tony Bennett.

IRIS pairs legendary 87-year-old documentarian Albert Maysles with Iris Apfel, the quick-witted, flamboyantly dressed 93-year-old style maven who has had an outsized presence on the New York fashion scene for decades. More than a fashion film, the documentary is a story about creativity and how, even in Iris’ dotage, a soaring free spirit continues to inspire. IRIS portrays a singular woman whose enthusiasm for fashion, art and people are life’s sustenance and reminds us that dressing, and indeed life, is nothing but an experiment.

Chronicles a man who is obsessively interested in only one thing, the pictures he takes that document the way people dress. The 80-year-old New York Times photographer has two columns in the paper’s Style section, yet nobody knows who he is.